710 results on '"Kvalsvig A"'
Search Results
202. Ethics approvals and quagmires
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KVALSVIG, A J and UNSWORTH, D J
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- 2002
203. Screening Caregivers of Children for Risky Drinking in KwaZulu-Natal, South Africa
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Jane Kvalsvig, Justin Knox, Leslie L. Davidson, Stephen M. Arpadi, Claude A. Mellins, Myra Taylor, Shuaib Kauchali, Murray H. Craib, and Meera Chhagan
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Adult ,Male ,medicine.medical_specialty ,Alcohol Drinking ,Epidemiology ,Poison control ,Alcohol abuse ,Binge drinking ,Suicide prevention ,Article ,Occupational safety and health ,Binge Drinking ,South Africa ,03 medical and health sciences ,Risk-Taking ,0302 clinical medicine ,Surveys and Questionnaires ,Injury prevention ,Prevalence ,medicine ,Humans ,030212 general & internal medicine ,Child ,Psychiatry ,Alcohol Use Disorders Identification Test ,business.industry ,Public health ,Public Health, Environmental and Occupational Health ,Obstetrics and Gynecology ,medicine.disease ,Alcoholism ,Caregivers ,Socioeconomic Factors ,Child, Preschool ,Pediatrics, Perinatology and Child Health ,Female ,business ,030217 neurology & neurosurgery - Abstract
Background and Objectives Alcohol abuse, a significant health problem in South Africa, affects the ability of adults to care for children. Little is known regarding risky alcohol use among child caregivers there. A large population-based study examined the prevalence of, and factors associated with, risky drinking among caregivers of young children in KwaZulu-Natal, South Africa comparing the use of the Alcohol Use Disorders Identification Test (AUDIT) and the AUDIT-C screens for hazardous or harmful drinking (referred to here as risky drinking). Methods 83 % of child caregivers from five tribal areas were interviewed using the 10-question AUDIT to screen for risky drinking. The AUDIT-C screen, a subset of AUDIT questions, targets alcohol consumption and binge drinking. Factors associated with risky drinking were investigated using logistic regression. Results 1434 caregivers participated, 98 % female. Sixteen percent reported ever drinking alcohol. Based on AUDIT criteria for risky drinking, 13 % of the sample scored as moderate drinkers, 2 % as hazardous users, and 1 % as harmful or dependent users (identifying 3 % as risky drinkers). Using AUDIT-C criteria to identify risky drinking significantly increased the proportion of caregivers identified as risky drinkers to 9 %. In multivariate analyses, factors associated with risky drinking were similar in both screens: partner violence, smoking, HIV-infection, caring for a child with disabilities. Conclusions for Practice Since the AUDIT-C identified risky alcohol use not otherwise detected with the full AUDIT, and since resources for screening in health care settings is limited, the AUDIT-C may be a more appropriate screen in populations where binge drinking is common.
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- 2016
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204. Parent and teacher perceptions of emerging special health care needs
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Stefanie Rosema, Amanda Kvalsvig, Meredith O'Connor, Sharon Goldfeld, and Jon Quach
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medicine.medical_specialty ,Longitudinal study ,business.industry ,Concordance ,education ,05 social sciences ,Special health care needs ,Checklist ,Disadvantaged ,03 medical and health sciences ,0302 clinical medicine ,Nursing ,030225 pediatrics ,Family medicine ,Pediatrics, Perinatology and Child Health ,Cohort ,medicine ,0501 psychology and cognitive sciences ,Early childhood ,business ,Psychosocial ,050104 developmental & child psychology - Abstract
Aim A fifth of children enter school with special health care needs (SHCN) impacting on their physical, psychosocial or educational development, including many with emerging SHCN who often do not qualify for additional supports. This study aimed to compare the perceptions of parents and teachers on children's emerging SHCN, and explore correlates of conflicting reports. Methods The Longitudinal Study of Australian Children (LSAC) is a nationally representative study of Australian children, which includes the abbreviated Children with Special Health Care Needs Screener. Data were analysed from a subsample of n = 720 children from the LSAC Kindergarten cohort (n = 4983) for whom teachers also completed the Australian Early Development Index checklist, a measure of early childhood development that includes teacher reported SHCN. Results Teachers (n = 120, 17.34%) identified more emerging SHCN than parents (n = 74, 10.74%), and reports were often discrepant. Children were more likely to have consistent reports of emerging SHCN when their parents had high levels of involvement at school (OR 4.86; 95% CI 1.08–21.80; P
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- 2016
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205. Validation of the Client Diagnostic Questionnaire to Assess Mental Health in South African Caregivers of Children
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Justin Knox, Stephen M. Arpadi, Claude A. Mellins, Meera Chhagan, Jane Kvalsvig, Angela Aidala, Danielle Friedman Nestadt, Shuaib Kauchali, Nonhlahla Myeza, Dan Bai, Leslie L. Davidson, Murray H. Craib, and Cheng-Shiun Leu
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Longitudinal study ,medicine.medical_specialty ,030505 public health ,Referral ,Poverty ,business.industry ,Psychiatric assessment ,medicine.disease ,Mental health ,03 medical and health sciences ,Clinical Psychology ,0302 clinical medicine ,Acquired immunodeficiency syndrome (AIDS) ,Medicine ,030212 general & internal medicine ,Medical diagnosis ,0305 other medical science ,business ,Psychiatry ,Psychosocial - Abstract
Background Given the high prevalence of mental health (MH) and substance abuse problems in low-to-middle income countries, the scarcity of MH professionals and the negative impact of psychiatric disorders on caregivers of young children, there is significant need for brief evidence-based screening tools for lay counselors to assist with MH assessment. This study aimed to validate a brief screening tool to assess psychiatric and substance use disorders, the Client Diagnostic Questionnaire (CDQ), in South Africa (SA). Methods Data are from a longitudinal study of health and psychosocial needs in preschool children in SA. Participants included 322 Zulu-speaking, female caregivers. Following procedures of the US CDQ validation study, lay counselors interviewed participants using the translated Zulu CDQ. Subsequently a psychologist conducted a full psychiatric assessment guided by the CDQ questions. Analyses examined sensitivity, specificity and overall accuracy, comparing lay counselor and psychologist assessment. Results Sensitivity (73%), specificity (81%) and overall accuracy (79%) were good for the variable indicating presence of ‘any diagnosis.’ Among those cases identified by the psychologist as having any psychiatric diagnosis, over 70% were correctly identified by lay counselors using the CDQ (i.e., positive predictive value was greater than 70%). The false positive rate was relatively low (19%). Specificity for ‘any disorder’ (including substance use) and ‘any psychiatric disorder’ were 81% and 79%. Conclusions The isiZulu CDQ is a sensitive and valid MH diagnostic screener that can be used by lay counselors with limited MH training to identify those in need of treatment and target extremely scarce MH professionals. Copyright © 2016 John Wiley & Sons, Ltd. Key Practitioner Messages South Africa (SA), a country heavily impacted by poverty, HIV and the legacy of Apartheid, has a high prevalence of mental health (MH) and substance abuse problems. In SA and other low-and-middle-income-countries (LMIC) there is a dearth of MH professionals. This study examined use and validity of the Client Diagnostic Questionnaire (CDQ), a brief diagnostic MH screening tool designed for use by lay counselors in HIV-affected populations. Comparing lay counsellor diagnoses on the CDQ to clinician assessment, sensitivity, specificity and overall accuracy were good at the level of ‘any diagnosis.’ The CDQ can be used effectively in SA and other LMIC with limited MH services to enable appropriate and efficient referral of individuals in primary care settings, supporting caregivers and the children in their care.
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- 2016
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206. Preschool attendance trends in Australia: Evidence from two sequential population cohorts
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Sarah Gray, Amanda Kvalsvig, Sharon Goldfeld, Meredith O'Connor, Joanne Tarasuik, Emily Incledon, and Elodie O'Connor
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Economic growth ,education.field_of_study ,Sociology and Political Science ,business.industry ,05 social sciences ,Population ,Attendance ,050301 education ,Census ,Indigenous ,Education ,Disadvantaged ,Odds ,Developmental and Educational Psychology ,Medicine ,National Policy ,0501 psychology and cognitive sciences ,business ,education ,0503 education ,Disadvantage ,050104 developmental & child psychology ,Demography - Abstract
Participation in a preschool program in the year before starting school can promote children’s healthy development, and has the potential to reduce inequities in developmental outcomes for at-risk subpopulations. In Australia, boosting preschool attendance has emerged as a national policy priority. In this paper, we draw on data from the Australian Early Development Census (AEDC) to describe preschool attendance in two sequential population cohorts, with preschool experiences in 2008 and 2011 reported retrospectively by teachers of children in their first year of school. Overall, findings show that the proportion of children attending preschool remained relatively stable between the two AEDC cohorts (in 2008, preschool attendance ranged from 57.0% to 85.8% across the states and territories, while in 2011, attendance ranged from 49.2% to 93.7%). At a subpopulation level, children from non-English speaking and Indigenous backgrounds and children living in disadvantaged communities all had substantially higher odds of not attending preschool in both 2008 and 2011. These findings highlight the need to maintain policy attention on efforts to further reduce barriers to preschool access for at-risk subpopulations, and the value of monitoring population trends in preschool attendance to better inform policy and service provision.
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- 2016
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207. Can the Neighborhood Built Environment Make a Difference in Children's Development? Building the Research Agenda to Create Evidence for Place-Based Children's Policy
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Hannah Badland, Geoffrey Woolcock, Meredith O'Connor, Karen Villanueva, Sharon Goldfeld, Hayley Christian, Billie Giles-Corti, and Amanda Kvalsvig
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Parks, Recreational ,0211 other engineering and technologies ,Vulnerability ,Public policy ,Poison control ,Public Policy ,Transportation ,02 engineering and technology ,03 medical and health sciences ,Child Development ,0302 clinical medicine ,Residence Characteristics ,Urban planning ,Environmental health ,Humans ,030212 general & internal medicine ,Social determinants of health ,Sociology ,City Planning ,Child ,Built environment ,business.industry ,Health Policy ,Research ,Urban design ,021107 urban & regional planning ,Public relations ,Child development ,Child, Preschool ,Pediatrics, Perinatology and Child Health ,Housing ,Environment Design ,Public Health ,business - Abstract
Healthy child development is determined by a combination of physical, social, family, individual, and environmental factors. Thus far, the majority of child development research has focused on the influence of individual, family, and school environments and has largely ignored the neighborhood context despite the increasing policy interest. Yet given that neighborhoods are the locations where children spend large periods of time outside of home and school, it is plausible the physical design of neighborhoods (built environment), including access to local amenities, can affect child development. The relatively few studies exploring this relationship support associations between child development and neighborhood destinations, green spaces, interaction with nature, traffic exposure, and housing density. These studies emphasize the need to more deeply understand how child development outcomes might be influenced by the neighborhood built environment. Pursuing this research space is well aligned with the current global movements on livable and child-friendly cities. It has direct public policy impact by informing planning policies across a range of sectors (urban design and planning, transport, public health, and pediatrics) to implement place-based interventions and initiatives that target children's health and development at the community level. We argue for the importance of exploring the effect of the neighborhood built environment on child development as a crucial first step toward informing urban design principles to help reduce developmental vulnerability in children and to set optimal child development trajectories early.
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- 2016
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208. Effects of iron supplementation and anthelmintic treatment on motor and language development of preschool children in Zanzibar: double blind, placebo controlled study. (Papers)
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Stoltzfus, Rebecca J., Kvalsvig, Jane D., Chwaya, Hababu M., Montresor, Antonio, Albonico, Marco, Tielsch, James M., Savioli, Lorenzo, and Pollitt, Ernesto
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Zanzibar -- Health aspects ,Iron in the body -- Physiological aspects -- Health aspects ,Anemia in children -- Physiological aspects -- Health aspects ,Helminths -- Physiological aspects -- Health aspects ,Worms, Intestinal and parasitic -- Physiological aspects -- Health aspects ,Health ,Physiological aspects ,Health aspects - Abstract
Abstract Objective To measure the effects of iron supplementation and anthelmintic treatment on iron status, anaemia, growth, morbidity, and development of children aged 6-59 months. Design Double blind, placebo controlled [...]
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- 2001
209. Treatment for intestinal helminth infection : Review needed to take account of all relevant evidence, not only effects on growth and cognitive performance
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Savioli, Lorenzo, Neira, Maria, Albonico, Marco, Beach, Michael J, Chwaya, Hababu Mohammed, Crompton, David W T, Dunne, John, Ehrenberg, John P, Gyorkos, Theresa, Kvalsvig, Jane, Taylor, Martin G, Urbani, Carlo, and Zheng, Feng
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- 2000
210. Life during lockdown: a qualitative study of low-income New Zealanders' experience during the COVID-19 pandemic.
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Choi, Kimberley, Giridharan, Namratha, Cartmell, Abigail, Lum, Dominique, Signal, Louise, Puloka, Viliami, Crossin, Rose, Gray, Lesley, Davies, Cheryl, Baker, Michael, and Kvalsvig, Amanda
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- 2021
211. Screening for Mental Health Among Young South African Children: The Use of the Strengths and Difficulties Questionnaire (SDQ)
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Claude A, Mellins, Qi, Xu, Danielle F, Nestadt, Justin, Knox, Shuaib, Kauchali, Stephen, Arpadi, Jane, Kvalsvig, Patrick E, Shrout, and Leslie L, Davidson
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Article - Abstract
BACKGROUND: Little is known about the prevalence of child mental health (MH) problems in sub-Saharan Africa, where poverty, HIV, and family disruption increase risk. One barrier is the lack of MH assessment tools lay staff can validly and reliably administer in settings with few MH professionals. METHODS: In a South African (SA) peri-urban cohort, we examined psychometric properties of the Strengths and Difficulties Questionnaire (SDQ), a widely used measure of child emotional and behavioral functioning. Data come from a large population-based study (N=1581) of children 4–6 years old. Lay fieldworkers administered the SDQ in isiZulu to caregivers at baseline and two years later. Exploratory factor analysisexamined whether the established SDQ five-factor structure and Total Difficulties score would be replicated. The psychometric model was tailored for ordinal items, and target factor rotation was used. RESULTS: Total Difficulties, Emotional symptoms and Prosocial behavior factors were supported, with partial support for Conduct problems. Peer relationships and Hyperactivity/inattentive subscale items loaded poorly. Subscale Cronbach’s alphas ranged from 0.29 (Peers) to 0.62 (Emotional). Internal consistency of Total Difficulties score was acceptable (0.74); 30% scored in the abnormal range on Total Difficulties, based on UK norms. CONCLUSIONS: SDQ scores in our sample suggest young children in SA are at high risk for MH problems. The SDQ, particularly the Total Difficulties score, may be a useful screening tool in SA. Yet, some subscales did not work in this language and context; if social skills and hyperactivity/inattention arebeing considered, modification or additional measures may be needed.
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- 2018
212. The impact of multidimensional disadvantage over childhood on developmental outcomes in Australia
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Elodie O'Connor, Shiau Chong, Hannah Badland, Amanda Kvalsvig, Sharon Goldfeld, Katrina Williams, Susan Woolfenden, Fiona Mensah, Meredith O'Connor, Gerry Redmond, and Sarah Gray
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Male ,Longitudinal study ,Inequality ,Epidemiology ,media_common.quotation_subject ,Vulnerable Populations ,Developmental psychology ,03 medical and health sciences ,0302 clinical medicine ,Child Development ,Risk Factors ,030225 pediatrics ,Humans ,030212 general & internal medicine ,Social determinants of health ,Longitudinal Studies ,Association (psychology) ,Child ,Disadvantage ,media_common ,Australia ,Infant, Newborn ,Infant ,General Medicine ,Child development ,Health equity ,Disadvantaged ,Socioeconomic Factors ,Child, Preschool ,Female ,Psychology - Abstract
Background: Understanding the relationship between different aspects of disadvantage over time and domains of child development will facilitate the formulation of more precise policy responses. We examined the association between exposure to aspects of disadvantage over the childhood period (from 0-9 years) and child development at 10-11 years. Methods: We used data from the nationally representative birth cohort of the Longitudinal Study of Australian Children (n = 4979). Generalized linear models with log-Poisson link were used to estimate the association between previously derived disadvantage trajectories (in each of four lenses of sociodemographic, geographic environments, health conditions and risk factors, and a composite of these) and risk of poor child developmental outcomes. Population-attributable fractions were calculated to quantify the potential benefit of providing all children with optimal conditions for each developmental outcome. Results: Trajectories of disadvantage were associated with developmental outcomes: children in the most disadvantaged composite trajectory had seven times higher risk of poor outcomes on two or more developmental domains, compared with those most advantaged. Trajectories of disadvantage in different lenses were varyingly associated with the child development domains of socio-emotional adjustment, physical functioning and learning competencies. Exposure to the most advantaged trajectory across all lenses could reduce poor developmental outcomes by as much as 70%. Conclusions: Exposure to disadvantage over time is associated with adverse child development outcomes. Developmental outcomes varied with the aspects of disadvantage experienced, highlighting potential targets for more precise policy responses. The findings provide evidence to stimulate advocacy and action to reduce child inequities.
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- 2018
213. Infant Development at the Age of 6 Months in Relation to Feeding Practices, Iron Status, and Growth in a Peri-Urban Community of South Africa
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Cornelius M. Smuts, Jane Kvalsvig, Marike Cockeran, Marinel Rothman, Mieke Faber, Tonderayi M. Matsungo, Namukolo Covic, 24420875 - Matsungo, Tonderayi Mathew, 21102007 - Cockeran, Marike, 20924445 - Smuts, Cornelius Mattheus, and 12912654 - Covic, Namukolo Margaret
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0301 basic medicine ,Male ,Infancy ,Urban Population ,psychomotor development ,Peri ,law.invention ,Psychomotor development ,South Africa ,0302 clinical medicine ,Child Development ,Randomized controlled trial ,Nutritional status ,law ,Prevalence ,Birth Weight ,030212 general & internal medicine ,Infant Nutritional Physiological Phenomena ,Growth Disorders ,Randomized Controlled Trials as Topic ,Psychomotor learning ,Nutrition and Dietetics ,Anemia, Iron-Deficiency ,Anthropometry ,Iron deficiency ,Urban community ,Breast Feeding ,Female ,Infant Food ,Iron status ,lcsh:Nutrition. Foods and food supply ,Birth weight ,Iron ,lcsh:TX341-641 ,Article ,03 medical and health sciences ,medicine ,Humans ,infancy ,030109 nutrition & dietetics ,business.industry ,Infant ,nutritional status ,medicine.disease ,Cross-Sectional Studies ,Socioeconomic Factors ,business ,Food Science ,Demography - Abstract
Background: Evidence on the association between feeding practices, iron deficiency, anaemia, stunting, and impaired psychomotor development during infancy is limited. This study assessed the association between psychomotor development with early feeding practices, growth, iron status, and anaemia. Methods: This was cross-sectional baseline data of a randomised controlled trial which included 6-month-old infants and their mothers or primary caregivers (n = 750) in a peri-urban community in the North West province of South Africa. The Kilifi Developmental Inventory and a parent rating scale were used to assess psychomotor development. Feeding practices and anthropometric measurements were based on the World Health Organisation (WHO) guidelines. Anaemia and iron status were determined by blood sample analysis. Results: Prevalence of anaemia and stunting for the infants were 36.4% and 28.5%, respectively. Multiple regression analysis showed that birth weight was related to combined psychomotor scores (β = −3.427 (−4.603, 1.891), p < 0.001), as well as parent rating scores (β = −0.843 (−1.507, −0.180), p = 0.013). Length-for-age z-scores were associated with combined psychomotor scores (β = −1.419 (−2.466, 0.373), p = 0.008), as well as parent rating scores (β = −0.747 (−1.483, −0.010), p = 0.047). Conclusions: In this setting, with high prevalence of anaemia and stunting, important associations between lower psychomotor development scores and birthweight as well as length-for-age z-scores in 6-month-old infants were found. These findings warrant further investigation to develop a greater understanding of factors influencing the association between child growth and psychomotor development within the first 1000 days of life.
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- 2018
214. Towards a South African model of language-based learning disability
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Mazibuko, Xoli, primary, Flack, Penelope, additional, and Kvalsvig, Jane, additional
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- 2019
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215. Parental Attitudes, Roles and Influences on Decision Making for Child Well-being on the South Coast of Kenya—a Descriptive Study
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Sonkola, Kennedy, primary, Kvalsvig, Jane Dene, additional, Brouwer, Inge, additional, Holding, Penny, additional, and Taylor, Myra, additional
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- 2019
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216. Positive Mental Health and Academic Achievement in Elementary School: New Evidence From a Matching Analysis
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O’Connor, Meredith, primary, Cloney, Dan, additional, Kvalsvig, Amanda, additional, and Goldfeld, Sharon, additional
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- 2019
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217. Association of anthropometric status and residential locality factors with cognitive scores of 4–6-year-old children in Kwazulu-Natal, South Africa
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Ajayi, OR, primary, Matthews, G, additional, Taylor, M, additional, Kvalsvig, JD, additional, Davidson, LL, additional, Kauchali, S, additional, and Mellins, C, additional
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- 2019
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218. Kilifi Naming Test
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Kitsao-Wekulo, Patricia, primary, Holding, Penny A., additional, Kvalsvig, Jane D., additional, Alcock, Katherine J., additional, and Taylor, H. Gerry, additional
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- 2019
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219. Colored Progressive Matrices--Adapted Version
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Kitsao-Wekulo, Patricia, primary, Holding, Penny A., additional, Kvalsvig, Jane D., additional, Alcock, Katherine J., additional, and Taylor, H. Gerry, additional
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- 2019
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220. Learning Trajectories of Children With Special Health Care Needs Across the Severity Spectrum
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Jon Quach, Amanda Kvalsvig, Sharon Goldfeld, Meredith O'Connor, and Joanne Tarasuik
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Gerontology ,Longitudinal study ,business.industry ,Academic achievement ,Educational attainment ,Latent class model ,Developmental psychology ,Pediatrics, Perinatology and Child Health ,Cohort ,Learning disability ,medicine ,Early childhood ,medicine.symptom ,business ,Socioeconomic status - Abstract
Objective A significant proportion of school-aged children experience special health care needs (SCHN) and seek care from pediatricians with a wide range of condition types and severity levels. This study examines the learning pathways of children with established (already diagnosed at school entry) and emerging (teacher identified) SHCN from school entry through the elementary school years. Methods The Longitudinal Study of Australian Children (LSAC) is a nationally representative clustered cross-sequential sample of 2 cohorts of Australian children which commenced in May 2004. Data were analyzed from the LSAC kindergarten cohort (n = 4,983), as well as a subsample of 720 children for whom teachers also completed the Australian Early Development Index checklist, a measure of early childhood development at school entry that includes SHCN. Results Latent class analysis was utilized to establish 3 academic trajectories from 4–5 to 10–11 years: high (24.3%), average (49.8%), and low (23.6%). Descriptive statistics revealed a trend for both children with established and emerging SHCN to fall into weaker performing learning pathways. Multinomial logistic regression focusing on those children with emerging SHCN confirmed this pattern of results, even after adjustment for covariates (relative risk 3.06, 95% confidence interval 1.03–9.10). Children who additionally had low socioeconomic standing were particularly at risk. Conclusions Even children with less complex SCHN are at risk for academic failure. Early identification, together with integrated health and educational support, may promote stronger pathways of educational attainment for these children. Achieving these better outcomes will require the involvement of both educational and health practitioners.
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- 2015
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221. A study of hurdles in mass treatment of schistosomiasis in KwaZulu-Natal, South Africa
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Jane Kvalsvig, Eyrun Floerecke Kjetland, A. Maphumulo, A Randjelovic, Svein Gunnar Gundersen, Silindile Gagai, Myra Taylor, S G Frønæs, Siphosenkosi Gift Zulu, M Munsami, and Leiv Sandvik
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medicine.medical_specialty ,business.industry ,Rural health ,education ,Public Health, Environmental and Occupational Health ,Alternative medicine ,Schistosomiasis ,medicine.disease ,Surgery ,Family medicine ,medicine ,Mass treatment ,Health education ,Parental consent ,Family Practice ,business ,Mass drug administration ,Kwazulu natal - Abstract
Background: It has been estimated that 700 million people worldwide and 5.2 million people in South Africa are in need of annual treatment for schistosomiasis. In accordance with the current policy the Department of Health (DoH) in KwaZulu-Natal province, South Africa, aimed to reach 75% treatment coverage in a mass treatment campaign (MTC) of schools in a schistosomiasis-endemic area.Methods: A cross-sectional study was designed to explore the implementation, coverage, challenges and limitations of a DoH MTC in a middle-income country. The study was conducted by exploring nurses’ and research team records, school enrolment lists and parental consent forms.Results: Slightly more than 10 000 learners in 43 primary and high schools were treated, achieving treatment coverage of 44.3%. A median of two schools per day were visited over the course of 39 days. We found that older learners, being male and attending a large school were independent significant predictors for low treatment coverage.Conclusion: Our r...
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- 2015
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222. Iron fortification adversely affects the gut microbiome, increases pathogen abundance and induces intestinal inflammation in Kenyan infants
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Jane Kvalsvig, Jane Njenga, Harold Tjalsma, Dorine W. Swinkels, Christophe Chassard, Alexandra Dostal, Guus A. M. Kortman, Michael B. Zimmermann, Diego Moretti, Tanja Jaeggi, Christophe Lacroix, Harro M. Timmerman, AM Mwangi, Penny Holding, and Jos Boekhorst
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biology ,lnfectious Diseases and Global Health Radboud Institute for Molecular Life Sciences [Radboudumc 4] ,Gastroenterology ,Clostridium difficile ,Clostridium perfringens ,Micronutrient ,biology.organism_classification ,medicine.disease_cause ,Faecal calprotectin ,Ferrous Fumarate ,Microbiology ,Bifidobacteriaceae ,Renal disorders Radboud Institute for Molecular Life Sciences [Radboudumc 11] ,Clostridium ,Pathogenic Escherichia coli ,Tumours of the digestive tract Radboud Institute for Molecular Life Sciences [Radboudumc 14] ,medicine ,medicine.drug - Abstract
Item does not contain fulltext BACKGROUND: In-home iron fortification for infants in developing countries is recommended for control of anaemia, but low absorption typically results in >80% of the iron passing into the colon. Iron is essential for growth and virulence of many pathogenic enterobacteria. We determined the effect of high and low dose in-home iron fortification on the infant gut microbiome and intestinal inflammation. METHODS: We performed two double-blind randomised controlled trials in 6-month-old Kenyan infants (n=115) consuming home-fortified maize porridge daily for 4 months. In the first, infants received a micronutrient powder (MNP) containing 2.5 mg iron as NaFeEDTA or the MNP without iron. In the second, they received a different MNP containing 12.5 mg iron as ferrous fumarate or the MNP without the iron. The primary outcome was gut microbiome composition analysed by 16S pyrosequencing and targeted real-time PCR (qPCR). Secondary outcomes included faecal calprotectin (marker of intestinal inflammation) and incidence of diarrhoea. We analysed the trials separately and combined. RESULTS: At baseline, 63% of the total microbial 16S rRNA could be assigned to Bifidobacteriaceae but there were high prevalences of pathogens, including Salmonella Clostridium difficile, Clostridium perfringens, and pathogenic Escherichia coli. Using pyrosequencing, +FeMNPs increased enterobacteria, particularly Escherichia/Shigella (p=0.048), the enterobacteria/bifidobacteria ratio (p=0.020), and Clostridium (p=0.030). Most of these effects were confirmed using qPCR; for example, +FeMNPs increased pathogenic E. coli strains (p=0.029). +FeMNPs also increased faecal calprotectin (p=0.002). During the trial, 27.3% of infants in +12.5 mgFeMNP required treatment for diarrhoea versus 8.3% in -12.5 mgFeMNP (p=0.092). There were no study-related serious adverse events in either group. CONCLUSIONS: In this setting, provision of iron-containing MNPs to weaning infants adversely affects the gut microbiome, increasing pathogen abundance and causing intestinal inflammation. TRIAL REGISTRATION NUMBER: NCT01111864.
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- 2015
223. The role of preschool in promoting children's healthy development: evidence from an Australian population cohort
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Mary Sayers, Amanda Kvalsvig, Elodie O'Connor, Tim Moore, Meredith O'Connor, Sally Brinkman, Sharon Goldfeld, Goldfeld, Sharon, O'Connor, Elodie, O'Connor, Meredith, Sayers, Mary, Moore, Tim, Kvalsvig, Amanda, and Brinkman, Sally
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Early childhood education ,Sociology and Political Science ,Australian Early Development Census (AEDC) ,Psychology, Developmental ,preschool ,Education ,Developmental psychology ,Emotional Maturity ,Developmental and Educational Psychology ,0501 psychology and cognitive sciences ,Cognitive skill ,05 social sciences ,Attendance ,050301 education ,disadvantage ,transition to school ,Child development ,Education & Educational Research ,Australian Early Development Index (AEDI) ,early childhood education and care (ECEC) ,Disadvantaged ,developmental vulnerability ,Cohort ,Social competence ,Psychology ,0503 education ,050104 developmental & child psychology - Abstract
A growing body of evidence suggests that engagement with quality early childhood education and care (ECEC) programs such as preschool can enhance children's early development. The Australian Early Development Census (AEDC) provides a unique opportunity to explore the relationship between ECEC and children's developmental outcomes in a full population cohort of Australian school entrants. The AEDC is a teacher-rated checklist that provides data on ECEC experiences in the year before starting school, as well as five important domains of child development at school entry: physical health and wellbeing, social competence, emotional maturity, language and cognitive skills, and communication skills and general knowledge. In 2009, the AEDC was completed for 97.5% of Australian children in their first year of formal schooling (N=261,147; M=5 years, 7 months of age). Logistic regression analyses revealed that attendance at preschool was associated with reduced odds (OR=0.69, p
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- 2016
224. Infant development at the age of 6 months in relation to feeding practices, iron status, and growth in a peri-urban community of South Africa
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Rothman, Marinel; Faber, Mieke; Covic, Namukolo; Matsungo, Tonderayi; Cockeran, Marike; Kvalsvig, Jane; Smuts, Cornelius, http://orcid.org/0000-0001-6566-9803 Covic, Namukolo, Rothman, Marinel; Faber, Mieke; Covic, Namukolo; Matsungo, Tonderayi; Cockeran, Marike; Kvalsvig, Jane; Smuts, Cornelius, and http://orcid.org/0000-0001-6566-9803 Covic, Namukolo
- Abstract
PR, IFPRI3; DCA; CRP4; ISI; Capacity Strengthening; B Promoting healthy food systems; E Building Resilience, PHND; A4NH, CGIAR Research Program on Agriculture for Nutrition and Health (A4NH), Evidence on the association between feeding practices, iron deficiency, anaemia, stunting, and impaired psychomotor development during infancy is limited. This study assessed the association between psychomotor development with early feeding practices, growth, iron status, and anaemia. Methods: This was cross-sectional baseline data of a randomised controlled trial which included 6-month-old infants and their mothers or primary caregivers (n = 750) in a peri-urban community in the North West province of South Africa. The Kilifi Developmental Inventory and a parent rating scale were used to assess psychomotor development. Feeding practices and anthropometric measurements were based on the World Health Organisation (WHO) guidelines. Anaemia and iron status were determined by blood sample analysis.
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- 2018
225. Patterns of Schistosoma haematobium infection, impact of praziquantel treatment and re-infection after treatment in a cohort of schoolchildren from rural KwaZulu-Natal/South Africa
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Kvalsvig Jane D, Magnussen Pascal, Olsen Annette, Saathoff Elmar, Becker Wilhelm, and Appleton Chris C
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Infectious and parasitic diseases ,RC109-216 - Abstract
Abstract Background Schistosomiasis is one of the major health problems in tropical and sub-tropical countries, with school age children usually being the most affected group. In 1998 the Department of Health of the province of KwaZulu-Natal established a pilot programme for helminth control that aimed at regularly treating primary school children for schistosome and intestinal helminth infections. This article describes the baseline situation and the impact of treatment on S. haematobium infection in a cohort of schoolchildren attending grade 3 in a rural part of the province. Methods Primary schoolchildren from Maputaland in northern KwaZulu-Natal were examined for Schistosoma haematobium infection, treated with praziquantel and re-examined four times over one year after treatment in order to assess the impact of treatment and patterns of infection and re-infection. Results Praziquantel treatment was highly efficacious at three weeks after treatment when judged by egg reduction rate (95.3%) and cure rate of heavy infections (94.1%). The apparent overall cure rate three weeks after treatment (57.9%) was much lower but improved to 80.7% at 41 weeks after treatment. Re-infection with S. haematobium was low and appeared to be limited to the hot and rainy summer. Analysis of only one urine specimen per child considerably underestimated prevalence when compared to the analysis of two specimens, but both approaches provided similar estimates of the proportion of heavy infections and of average infection intensity in the population. Conclusion According to WHO guidelines the high prevalence and intensity of S. haematobium infection necessitate regular treatment of schoolchildren in the area. The seasonal transmission pattern together with the slow pace of re-infection suggest that one treatment per year, applied after the end of summer, is sufficient to keep S. haematobium infection in the area at low levels.
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- 2004
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226. Patterns of geohelminth infection, impact of albendazole treatment and re-infection after treatment in schoolchildren from rural KwaZulu-Natal/South-Africa
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Kvalsvig Jane D, Olsen Annette, Saathoff Elmar, and Appleton Chris C
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Infectious and parasitic diseases ,RC109-216 - Abstract
Abstract Background Geohelminth infection is a major health problem of children from rural areas of developing countries. In an attempt to reduce this burden, the Department of Health of the province of KwaZulu-Natal (KZN) established in 1998 a programme for helminth control that aimed at regularly treating primary school children for schistosomiasis and intestinal helminths. This article describes the baseline situation and the effect of treatment on geohelminth infection in a rural part of the province. Methods Grade 3 schoolchildren from Maputaland in northern KZN were examined for infections with hookworm, Ascaris lumbricoides, and Trichuris trichiura, treated twice with 400 mg albendazole and re-examined several times over one year after the first treatment in order to assess the impact of treatment and patterns of infection and re-infection. Results The hookworm prevalence in the study population (83.2%) was considerably higher than in other parts of the province whereas T. trichiura and especially A. lumbricoides prevalences (57.2 and 19.4%, respectively) were much lower than elsewhere on the KZN coastal plain. Single dose treatment with albendazole was very effective against hookworm and A. lumbricoides with cure rates (CR) of 78.8 and 96.4% and egg reduction rates (ERR) of 93.2 and 97.7%, respectively. It was exceptionally ineffective against T. trichiura (CR = 12.7%, ERR = 24.8%). Re-infection with hookworm and A. lumbricoides over 29 weeks after treatment was considerable but still well below pre-treatment levels. Conclusion High geohelminth prevalences and re-infection rates in the study population confirm the need for regular treatment of primary school children in the area. The low effectiveness of single course albendazole treatment against T. trichiura infection however demands consideration of alternative treatment approaches.
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- 2004
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227. 3D printed carbon fibre composite knee and hip replacements
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Xiaowen Yuan, Andrew Kvalsvig, Peng Cao, and Bradford Milne
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030203 arthritis & rheumatology ,030222 orthopedics ,3d printed ,Materials science ,business.industry ,Bone implant ,chemistry.chemical_element ,3D printing ,Material requirements ,Finite element method ,03 medical and health sciences ,0302 clinical medicine ,chemistry ,Carbon fibre composite ,Composite material ,business ,Carbon - Abstract
This paper reviews current research on the design, processing and finite element analysis (FEA) of bone implants for the human body. The feasibility of producing carbon fibre composite implants, in particular knee and hip replacements which are common bone replacements by 3D printing, is discussed. The relationship between design and material requirements is elaborated.
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- 2017
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228. Measurement of expressive vocabulary in school-age children: Development and application of the Kilifi Naming Test (KNT)
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Penny Holding, H. Gerry Taylor, Patricia Kitsao-Wekulo, Jane Kvalsvig, and Katherine J. Alcock
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Male ,Rural Population ,Vocabulary ,Adolescent ,Psychometrics ,media_common.quotation_subject ,Concurrent validity ,Child Behavior ,Language Development ,Developmental psychology ,03 medical and health sciences ,0302 clinical medicine ,Developmental and Educational Psychology ,Humans ,0501 psychology and cognitive sciences ,Cognitive skill ,Child ,Reliability (statistics) ,media_common ,Language Tests ,Verbal Behavior ,05 social sciences ,Reproducibility of Results ,Regression analysis ,Original Articles ,Kenya ,Test (assessment) ,Neuropsychology and Physiological Psychology ,Expressive vocabulary ,Convergent validity ,Child, Preschool ,Female ,Psychology ,030217 neurology & neurosurgery ,050104 developmental & child psychology - Abstract
The dearth of locally developed measures of language makes it difficult to detect language and communication problems among school-age children in sub-Saharan African settings. We sought to describe variability in vocabulary acquisition as an important element of global cognitive functioning. Our primary aims were to establish the psychometric properties of an expressive vocabulary measure, examine sources of variability, and investigate the measure’s associations with non-verbal reasoning and educational achievement. The study included 308 boys and girls living in a predominantly rural district in Kenya. The developed measure, the Kilifi Naming Test (KNT), had excellent reliability and acceptable convergent validity. However, concurrent validity was not adequately demonstrated. In the final regression model, significant effects of schooling and area of residence were recorded. Contextual factors should be taken into account in the interpretation of test scores. There is need for future studies to explore the concurrent validity of the KNT further.
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- 2017
229. Helminth control as an entry point for healthpromoting schools in Kwazulu-Natal
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Taylor, M., Coovadia, H.M., Kvalsvig, J.D., Jinabhai, C.C., and Reddy, P.
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No Abstract.
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- 2017
230. Academic outcomes of multilingual children in Australia
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Meredith O'Connor, Sharon Goldfeld, Joanne Tarasuik, Amanda Kvalsvig, Elodie O'Connor, and Sarah Gray
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Male ,Longitudinal study ,media_common.quotation_subject ,education ,Context (language use) ,Multilingualism ,Language Development ,Language and Linguistics ,Literacy ,Speech and Hearing ,Numeracy ,Reading (process) ,Pedagogy ,Humans ,0501 psychology and cognitive sciences ,Longitudinal Studies ,Child ,Curriculum ,media_common ,Medical education ,Academic Success ,Research and Theory ,05 social sciences ,Australia ,050301 education ,LPN and LVN ,Language development ,Otorhinolaryngology ,Socioeconomic Factors ,Child, Preschool ,Female ,Psychology ,0503 education ,050104 developmental & child psychology - Abstract
The Australian educational system is increasingly challenged to meet the needs of multilingual students, who comprise a fifth of the student population. Within the context of a monolingual English curriculum, multilingual children who enter school not yet English proficient may be at risk of experiencing inequitable educational outcomes.We examined the relationship between the timing of multilingual children's acquisition of receptive English vocabulary skills and subsequent reading and numeracy outcomes, as well as factors associated with earlier versus later timing of acquisition. Data were drawn from the Kindergarten-cohort (n = 4983) of the Longitudinal Study of Australian Children - a nationally representative, community sample of Australian children.Linear regression analyses revealed that multilingual children who begin school with proficient receptive English vocabulary skills, or who acquire proficiency early in schooling, are indistinguishable from their monolingual peers in literacy and numeracy outcomes by 10-11 years. However, later acquisition of receptive English vocabulary skills (i.e. after 6-7 years) was associated with poorer literacy outcomes. In turn, socioeconomic disadvantage and broader language or learning problems predicted this later acquisition of receptive English vocabulary skills.All children need to be supported during the early years of school to reach their full educational potential.
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- 2017
231. Factors associated with the health and cognition of 6-year-old to 8-year-old children in KwaZulu-Natal, South Africa
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Jane Kvalsvig, Myra Taylor, Oluwakemi Rachel Ajayi, Shuaib Kauchali, Claude A. Mellins, Glenda Matthews, and Leslie L. Davidson
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0301 basic medicine ,Male ,Rural Population ,Nutritional Status ,Article ,Cohort Studies ,03 medical and health sciences ,Fathers ,South Africa ,0302 clinical medicine ,Child Development ,Cognition ,Environmental protection ,Residence Characteristics ,Cognitive development ,Humans ,Cognitive Dysfunction ,030212 general & internal medicine ,Effects of sleep deprivation on cognitive performance ,Child ,Socioeconomic status ,Growth Disorders ,030109 nutrition & dietetics ,Schools ,Kaufman Assessment Battery for Children ,Public Health, Environmental and Occupational Health ,Age Factors ,Child Health ,Body Height ,Cognitive test ,Diet ,Infectious Diseases ,Socioeconomic Factors ,Educational Status ,Parasitology ,Female ,Rural area ,Psychology ,Cohort study ,Demography - Abstract
Objective To investigate 6-year-old to 8-year-old children's health, nutritional status and cognitive development in a predominantly rural area of KwaZulu-Natal, South Africa. Methods Cohort study of 1383 children investigating the association of demographic variables (area of residence, sex, pre-school education, HIV status, height for age and haemoglobin level) and family variables (socioeconomic status, maternal and paternal level of education), with children's cognitive performance. The latter was measured using the Grover-Counter Scale of Cognitive Development and subtests of the Kaufman Assessment Battery for Children, second edition (KABC-II). General linear models were used to determine the effect of these predictors. Results Area of residence and height-for-age were the statistically significant factors affecting cognitive test scores, regardless of attending pre-school. Paternal level of education was also significantly associated with the cognitive test scores of the children for all three cognitive test results, whereas HIV status, sex and their socioeconomic status were not. Conclusion Children with low cognitive scores tended to be stunted (low height-for-age scores), lacked pre-school education and were younger. Area of residence and their parents' educational level also influenced their cognition.
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- 2017
232. Intimate Partner Violence and Child Behavioral Problems in South Africa
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Pratibha Chander, Shuaib Kauchali, Justin Knox, Stephen M. Arpadi, Myra Taylor, Jane Kvalsvig, Claude A. Mellins, and Leslie L. Davidson
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Adult ,medicine.medical_specialty ,education ,Population ,Intimate Partner Violence ,Developing country ,Binge drinking ,HIV Infections ,Child Behavior Disorders ,behavioral disciplines and activities ,Article ,Food Supply ,Stress Disorders, Post-Traumatic ,South Africa ,03 medical and health sciences ,0302 clinical medicine ,Poverty Areas ,030225 pediatrics ,mental disorders ,Humans ,Medicine ,0501 psychology and cognitive sciences ,Psychiatry ,Developing Countries ,education.field_of_study ,Poverty ,business.industry ,05 social sciences ,social sciences ,Odds ratio ,Mental health ,Alcoholism ,Cohabitation ,Unemployment ,Child, Preschool ,Pediatrics, Perinatology and Child Health ,population characteristics ,Domestic violence ,Female ,business ,050104 developmental & child psychology - Abstract
BACKGROUND: Research in high-income countries has repeatedly demonstrated that intimate partner violence (IPV) experienced by women negatively affects the health and behavior of children in their care. However, there is little research on the topic in lower- and middle-income countries. The population-based Asenze Study gathered data on children and their caregivers in KwaZulu-Natal, South Africa. This data analysis explores the association of caregiver IPV on child behavior outcomes in children METHODS: This population-based study was set in 5 Zulu tribal areas characterized by poverty, food insecurity, unemployment, and a high HIV prevalence. The Asenze Study interviewed caregivers via validated measures of IPV, alcohol use, caregiver mental health difficulties, and child behavior disorders in their preschool children. RESULTS: Among the 980 caregivers assessed, 37% had experienced IPV from their current partner. Experience of partner violence (any, physical, or sexual) remained strongly associated with overall child behavior problems (odds ratio range: 2.46–3.10) even after age, HIV status, cohabitation with the partner, alcohol use, and posttraumatic stress disorder were accounted for. CONCLUSIONS: Childhood behavioral difficulties are associated with their caregiver’s experience of IPV in this population, even after other expected causes of child behavior difficulties are adjusted for. There is a need to investigate the longer-term impact of caregiver partner violence, particularly sexual IPV, on the health and well-being of vulnerable children in lower- and middle-income countries. Studies should also investigate whether preventing IPV reduces the occurrence of childhood behavior difficulties.
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- 2017
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233. Risk of rehospitalisation and death for vulnerable New Zealand children
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Tim Foster, Deborah A Williamson, Amanda Kvalsvig, Nevil Pierse, Michael G Baker, and Jane Oliver
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Male ,Pediatrics ,medicine.medical_specialty ,Adolescent ,Social Determinants of Health ,Psychological intervention ,Social Environment ,Risk Assessment ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,030225 pediatrics ,Epidemiology ,medicine ,Humans ,030212 general & internal medicine ,Social determinants of health ,Child ,Survival analysis ,business.industry ,Health services research ,Social environment ,Infant ,Survival Analysis ,Child mortality ,Hospitalization ,Child, Preschool ,Pediatrics, Perinatology and Child Health ,Emergency medicine ,Child Mortality ,Housing ,Female ,business ,Risk assessment ,New Zealand - Abstract
ObjectivesThere is considerable need to improve the effectiveness of healthcare to reduce morbidity and mortality. Child hospitalisations are influenced by determinants of health, including the home environment. Our aims were: (1) To investigate whether children hospitalised with potentially avoidable conditions thought to be associated with the home have an increased risk of rehospitalisation and death, (2) To investigate whether children hospitalised with particular subgroups of potentially avoidable conditions have an increased risk of rehospitalisation and death, (3) To assess the usefulness of these subgroups for identifying at-risk children.DesignWe used four existing groups of potentially avoidable conditions developed based on expert opinion: 1. the potentially avoidable hospitalisations (PAH) group, associated with social/environmental conditions, 2. the potentially avoidable hospitalisations attributable (at least in part) to the home environment (PAHHE) group, 3. the crowding group, and 4. the Ministry of Health (MoH) group. We analysed national New Zealand hospital discharge data (2000–2014). Rehospitalisation and death were described using Kaplan-Meier curves. Group effectiveness for identifying at-risk children was assessed using Cox proportional hazard models with children hospitalised for non-PAH conditions as comparison.ResultsIn total, 1425085 hospital admissions occurred, for 683115 unique children. Rehospitalisation was relatively common (71.0%). Death was rare (0.6%). All groups performed moderately well identifying at-risk children. Children with PAH have increased risk of rehospitalisation (adjusted HR (aHR):2.30–3.60) and death (aHR:3.07–10.44). PAH group had highest sensitivity (75.1%). The MoH group has the highest positive predictive value (rehospitalisation: 86.2%, death: 2.5%).ConclusionsChildren in the MoH group are very likely to benefit from housing interventions. Rehospitalisation and early mortality are useful assessment measures. Rehospitalisation exerts a considerable burden, and child deaths are catastrophic.
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- 2017
234. Exploring Differences in the Rural Home Environment: The Role of Biological and Environmental Factors
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Robert H. Bradley, Nori Minich, Patricia Kitsao-Wekulo, H. Gerry Taylor, Jane Kvalsvig, Kevin Connolly, Christopher J. Burant, and Penny Holding
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Home environment ,Environmental health ,parasitic diseases ,Environmental science ,Nutritional status ,Health and development ,Variance (accounting) - Abstract
The home environment is an important influence on children’s health and development. We aimed to identify the specific actions, objects, events, and conditions within households that influence child well-being. This cross-sectional study was conducted in Kilifi District among 146 children aged 8–10 years. We derived the Kilifi-Home Inventory for Primary School Children (Kilifi-HIPSC) through the modification and adaption of an existing measure of the home environment. The final 45 items were grouped into subscales comprising items which cohered conceptually. The measure was suitable for both genders and applicable across its intended age range. Nutritional status and household wealth contributed to variance in Kilifi-HIPSC scores. In turn, the home environment was associated with language and motor outcomes in school-age children. The brevity of the measure facilitates quick screening of the promotive aspects of a child’s home environment.
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- 2017
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235. Understanding the impact of special health care needs on early school functioning: a conceptual model
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S. Howell-Meurs, Sharon Goldfeld, Meredith O'Connor, and Amanda Kvalsvig
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Service (systems architecture) ,Chronic condition ,Activities of daily living ,business.industry ,media_common.quotation_subject ,Public Health, Environmental and Occupational Health ,Psychological intervention ,Academic achievement ,Social engagement ,Developmental psychology ,Conceptual framework ,Pediatrics, Perinatology and Child Health ,Developmental and Educational Psychology ,Conceptual model ,Medicine ,business ,media_common - Abstract
Children with special health care needs (SHCN) have or are at increased risk for a chronic condition that necessitates more health and related supports than their peers. While it is generally accepted that these children are at risk for school failure, the mechanisms through which SHCN impact on children's experiences (and therefore opportunities to intervene) at school are still relatively poorly understood. Based on the current literature, this paper provides a conceptual framework to guide further discussion of this issue in research, policy and practice. Evidence from the literature was reviewed and existing frameworks examined. We propose that SHCN impact on four interrelated domains of children's functioning: (1) body functions and structures; (2) activities of daily living; (3) social participation; and (4) educational participation. Children's functioning is further influenced by risk and protective factors that can be identified at the level of the child, family and service systems. Together, these processes contribute to shaping either positive or negative trajectories of school functioning. The mechanisms influencing school experiences for children with special health care needs are complex, with opportunities for positive interventions at a range of levels. The proposed conceptual model provides an accessible tool for guiding discussion of the support needs of this vulnerable population.
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- 2014
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236. Targeted chemotherapy for parasite infestations in rural black preschool children
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Myra Taylor, Pillai G, and Jd, Kvalsvig
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Protozoan Infections ,Antiparasitic Agents ,Black People ,Rural Health ,Trematode Infections ,Albendazole ,Cestode Infections ,Praziquantel ,Black or African American ,South Africa ,Child, Preschool ,Metronidazole ,Parasitic Diseases ,Humans ,Child ,Nematode Infections - Abstract
Objective. To investigate whether targeted chemotherapy can reduce parasite prevalence rates in rural black preschool children.Design. The study consisted of a before/after trial. Stool and urine samples were analysed on four occasions over a 21-week period.Setting. Creches in two rural areas of southern _ Kwazulu/Natal (coastal and inland). Patients. Two hundred children of 4 - 6 years of age attending 19 creches in the area. Intervention. Targeted chemotherapy using albendazole for nematode infestations, praziquantel for trematode and cestode infestations and metronidazole for protozoal infections was administered twice at an interval of 14 weeks.Main outcome measure. Prevalence rates.Results. The prevalences of Ascaris lumbricoides, Trichuris trichiura and Necator americanus infestation decreased significantly after treatment. Reinfestation rates 12 weeks after treatment were 16% for A lumbricoides, 33% for T. trichiura, 24% for Giardia lamblia and 3% for N. americanus. No reinfestation was noted for Schistosoma haematobium, Hymenolepsis or Taenia species.Conclusion. The study suggests that parasite prevalence rates in children can be reduced by the administration of appropriate chemotherapy at regular intervals. However, the provision of clean water and adequate sewerage facilities remains a high priority for black communities living in rural areas of South Africa.
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- 2016
237. Association of anthropometric status and residential locality factors with cognitive scores of 4–6-year-old children in Kwazulu-Natal, South Africa.
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Ajayi, OR, Matthews, G, Taylor, M, Kvalsvig, JD, Davidson, LL, Kauchali, S, and Mellins, C
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Background: The Asenze study has the long-term goal of promoting better physical, cognitive and psychosocial functioning of children in a rural area in KwaZulu-Natal, 50 km from Durban, with a view to planning interventions to promote growth and development for very young children. The specific objective in this paper was to provide information for the Child Health and Development project of the Valley Trust to assist with intervention planning. The broader goal was to assess developmental delays in communities ravaged by the HIV epidemic. The Asenze study was designed in two phases from 2008 and 2012. The current paper reports on 1 581 4–6-year-old children in the baseline phase (2008–2010) in the five adjacent tribal areas in the study area. Method: The participants included all the 4–6-year-olds whose parents had consented to inclusion in the project and their caregivers. Data were derived from a brief questionnaire administered in the homes of participants, and subsequently from medical and psychological assessments of the children and their caregivers at the Asenze clinic. The association between child factors and other factors (geographic area, socioeconomic status (SES), parental level of education, the child's preschool education) on the one hand, and the child's cognitive performance (as measured by the Grover Counter and subtests of the KABC-11) were analysed. Linear regression models were employed to determine which predictor variables of interest in a model were associated with the children's cognitive scores as the dependent variables. Results: Based on the data, the principal factors associated with children's cognitive outcomes were height-for-age z-score (HAZ), preschool education and the area of residence. Generally children who had low cognitive scores were more often stunted (as defined by the WHO anthropometric tables), had not had preschool education, and came from areas less favourable in terms of local infrastructure and access to employment opportunities and arable land. Conclusion: The finding from this cross-sectional analysis of baseline data showed that in addition to height for age and preschool education, which are commonly thought to impact on cognition, the local authority area where the children lived was associated with their scores on cognitive tests. This has implications for intervention planning. The functioning of local government in promoting the type of community development that will protect the rights of children should be taken into account. [ABSTRACT FROM AUTHOR]
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- 2020
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238. New Zealand's elimination strategy for the COVID-19 pandemic and what is required to make it work.
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Baker, Michael G., Kvalsvig, Amanda, Verrall, Ayesha J., Telfar-Barnard, Lucy, Wilson, Nick, and Baker, Michael
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- 2020
239. Screening for developmental disabilities in HIV positive and HIV negative children in South Africa: Results from the Asenze Study
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Knox, Justin, primary, Arpadi, Stephen M., additional, Kauchali, Shuaib, additional, Craib, Murray, additional, Kvalsvig, Jane D., additional, Taylor, Myra, additional, Bah, Fatimatou, additional, Mellins, Claude, additional, and Davidson, Leslie L., additional
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- 2018
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240. The impact of multidimensional disadvantage over childhood on developmental outcomes in Australia
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Goldfeld, Sharon, primary, O’Connor, Meredith, additional, Chong, Shiau, additional, Gray, Sarah, additional, O’Connor, Elodie, additional, Woolfenden, Sue, additional, Redmond, Gerry, additional, Williams, Katrina, additional, Mensah, Fiona, additional, Kvalsvig, Amanda, additional, and Badland, Hannah, additional
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- 2018
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241. Infant Development at the Age of 6 Months in Relation to Feeding Practices, Iron Status, and Growth in a Peri-Urban Community of South Africa
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Rothman, Marinel, primary, Faber, Mieke, additional, Covic, Namukolo, additional, Matsungo, Tonderayi, additional, Cockeran, Marike, additional, Kvalsvig, Jane, additional, and Smuts, Cornelius, additional
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- 2018
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242. Understanding child disadvantage from a social determinants perspective
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Goldfeld, Sharon, primary, O’Connor, Meredith, additional, Cloney, Dan, additional, Gray, Sarah, additional, Redmond, Gerry, additional, Badland, Hannah, additional, Williams, Katrina, additional, Mensah, Fiona, additional, Woolfenden, Sue, additional, Kvalsvig, Amanda, additional, and Kochanoff, Anita T, additional
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- 2017
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243. Co-infection with Schistosoma haematobium and soil-transmitted helminths in rural South Africa
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Molvik, Mari, Helland, Elin, Zulu, Siphosenkosi Gift, Kleppa, Elisabeth, Lillebo, Kristine, Gundersen, Svein Gunnar, Kvalsvig, Jane D., Taylor, Myra, Kjetland, Eyrun F, Vennervald, Birgitte J., Molvik, Mari, Helland, Elin, Zulu, Siphosenkosi Gift, Kleppa, Elisabeth, Lillebo, Kristine, Gundersen, Svein Gunnar, Kvalsvig, Jane D., Taylor, Myra, Kjetland, Eyrun F, and Vennervald, Birgitte J.
- Abstract
Schistosomiasis and soil-transmitted helminthiasis are among the most prevalent neglected tropical diseases and may lead to severe consequences. We assessed the extent of co-infection between Schistosoma haematobium and the soil-transmitted helminths (STHs) Ascaris lumbricoides and Trichuris trichiura in schoolgirls in the rural areas of KwaZulu-Natal, South Africa. We also explored if S. haematobium can serve as a predictor for soil-transmitted helminths in this area. From 15 selected schools, 726 primary schoolgirls aged 10–12 years provided both urine and stool samples. The samples were examined for the presence of eggs using the urine sedimentation technique for S. haematobium and the Kato Katz technique for STHs. Pearson’s chi-square test was used to calculate the association and Spearman’s rank correlation was used for the correlation analysis. There was a highly significant correlation between S. haematobium and STHs at a school level (Spearman’s correlation coefficient =0.93; p<0.001). The prevalences were found to be 36.9% and 38.8% for S. haematobium and STHs, respectively. A significant association was found between S. haematobium and STHs (odds ratio =2.05; confidence interval =1.58–2.93; p<0.001). Indirect indicators of urogenital schistosomiasis (e.g. water contact and haematuria) were significantly associated with A. lumbricoides and T. trichiura infection. We have demonstrated a highly significant correlation and overall association between urogenital schistosomiasis and A. lumbricoides and T. trichiura. We cautiously suggest that all S. haematobium endemic areas should be treated for STH infections.
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- 2017
244. Long-chain n-3 PUFA supplementation decreases physical activity during class time in iron-deficient South African school children
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Smuts, Cornelius M., Greeff, Jani, Kvalsvig, Jane, Zimmermann, Michael B., Baumgartner, Jeannine, Smuts, Cornelius M., Greeff, Jani, Kvalsvig, Jane, Zimmermann, Michael B., and Baumgartner, Jeannine
- Abstract
Both Fe deficiency and poor n-3 fatty acid status have been associated with behavioural changes in children. In the present study, we investigated the effects of Fe and DHA+EPA supplementation, alone or in combination, on physical activity during school days and on teacher-rated behaviour in healthy Fe-deficient school children. In a 2×2 factorial design, children (n 98, 6-11 years) were randomly assigned to receive (1) Fe (50mg) plus DHA (420mg)+EPA (80mg), (2) Fe plus placebo, (3) placebo plus DHA+EPA or (4) placebo plus placebo as oral supplements (4d/week) for 8·5 months. Physical activity was measured during four school days at baseline and endpoint using accelerometers, and data were stratified into morning class time (08.00-10.29 hours), break time (10.30-11.00 hours) and after-break class time (11.01-12.00 hours) for analysis. Classroom behaviour was assessed at endpoint using Conners' Teacher Rating Scales. DHA+EPA supplementation decreased physical activity counts during morning class time, increased sedentary physical activity, and decreased light- and moderate-intensity physical activities. Consistently, DHA+EPA supplementation increased sedentary physical activity and decreased light-intensity physical activity during after-break class time. Even though there were no treatment effects found on teacher-rated behaviour, lower physical activity during morning class time was associated with lower levels of teacher-rated hyperactivity and oppositional behaviour at endpoint. Despite a positive association between Fe status and physical activity during break time at baseline, Fe supplementation did not affect physical activity during break time and class time. Our findings suggest that DHA+EPA supplementation may decrease physical activity levels during class time, and further indicate that accelerometry might be a useful tool to assess classroom behaviour in healthy children
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- 2017
245. 3D printing of fibre reinforced honeycomb structured composite materials
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Peng Cao, Andrew Kvalsvig, Xiaowen Yuan, and Johan Potgieter
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0209 industrial biotechnology ,Materials science ,business.industry ,Composite number ,3D printing ,02 engineering and technology ,021001 nanoscience & nanotechnology ,Composite structure ,020901 industrial engineering & automation ,Ultimate tensile strength ,Honeycomb ,Composite material ,0210 nano-technology ,business - Abstract
The paper presents the work on manufacturing and preliminary characterisation of fibre reinforced composite honeycomb structured composites by 3D printing. The capabilities and limitations of the processing are discussed. The work aims to compare the effectiveness of reinforcement using specimens of similar dimensions produced on the same machine and characterise them. Initially, tensile performance of unprinted fibre and printed fibre has been evaluated. Challenges associated with the testing of the printed specimens are addressed. Bend testing will follow to assess the performance as a composite structure to assess the interaction between fibre, matrix and core. Continuing work is planned to compare the effect of other parameters such as fill pattern and fill density to assess their effect on the composite.
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- 2016
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246. O44-4 Sonke project: a cohorty study of the impact of pesticides on women and children in south africa
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Lawrence Mubaiwa, Jane Kvalsvig, Alex Burdorf, Saloshni Naidoo, Benn Sartorius, Myra Taylor, and Hans Kromhout
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Longitudinal study ,Pyrethroid ,Exposed Population ,business.industry ,05 social sciences ,0211 other engineering and technologies ,0507 social and economic geography ,021107 urban & regional planning ,02 engineering and technology ,Pesticide ,Child development ,Toxicology ,chemistry.chemical_compound ,chemistry ,Environmental health ,parasitic diseases ,Cohort ,Medicine ,Unexposed Population ,business ,050703 geography ,Reproductive health - Abstract
Background Dichlorodiphenyltrichloroethane (DDT) has been the centre of debate for several decades with a global call for a ban on its use, while organophosphates (OP) and pyrethroids are used extensively in agriculture. Both DDT, OPs and pyrethroids are being used extensively in South Africa in malaria control and small-scale agriculture. There is limited information from Africa on the adverse associations between DDT, OPs, pyrethroids and reproductive and neurobehavioural health outcomes. Aim The aim of this study is to identify the impact of DDT, OP and pyrethroid exposure on the reproductive health of pregnant women and the neurobehavioural health outcomes of their offspring. Method This longitudinal study with a 3 year follow-up period is being conducted in the uMkanyakude (exposed population) and uMgungundlovu (unexposed population) districts of KwaZulu-Natal, South Africa. A total of 350 pregnant women attending antenatal clinics at the district hospital and respective primary health clinics will be recruited (February – December 2016) and followed for 3 years. Maternal interviews (demographic, exposure and health data), and biomonitoring of exposure to pesticide (urine and blood) will take place at recruitment and annually for the duration of the study. Infant clinical and neurobehavioural assessments together with direct home observations to assess child development will take place. Biomonitoring of exposure to DDT, OPs and pyrethroids will take place at birth and annually for the duration of the study. Results and discussion Data is currently being collected and information from the baseline recruitment interviews will be presented for the available women. Demographic, occupational and environmental pesticide exposure together with reproductive histories will be presented for the recruited cohort. This study will contribute knowledge on the relationship between DDT, OPs, pyrethroids and reproductive and neurobehavioural health outcomes in an African population.
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- 2016
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247. Special Health Care Needs Across the School and Family Contexts: Implications for Service Utilization
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Stefanie Rosema, Meredith O'Connor, Jon Quach, Sharon Goldfeld, and Amanda Kvalsvig
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Male ,Parents ,medicine.medical_specialty ,Longitudinal study ,education ,Child Health Services ,Special health care needs ,Logistic regression ,Odds ,Interviews as Topic ,03 medical and health sciences ,0302 clinical medicine ,Nursing ,030225 pediatrics ,medicine ,Humans ,030212 general & internal medicine ,Early childhood ,Longitudinal Studies ,Disadvantage ,School Health Services ,Health Services Needs and Demand ,Schools ,business.industry ,4. Education ,Australia ,Odds ratio ,Faculty ,Confidence interval ,Disabled Children ,Logistic Models ,Family medicine ,Child, Preschool ,Pediatrics, Perinatology and Child Health ,Female ,business - Abstract
Objective A fifth of children enter school with special health care needs (SHCN), many of whom have difficulties that are milder or not yet formally diagnosed (emerging SHCN). This study aimed to investigate how differing perceptions of children's emerging SHCN across the family and school contexts relates to service utilization. Methods Sample: The nationally representative birth cohort of the Longitudinal Study of Australian Children, which includes parent reports on the abbreviated Children with Special Health Care Needs Screener. For a subsample of 2459 children teachers also completed the Australian Early Development Census, a measure of early childhood development at school entry that includes SHCN. Analysis: Logistic regression analyses were conducted adjusting for severity of condition, gender, language background, and disadvantage. Results Overall 24.1% of children were identified by their parent and/or teacher as experiencing emerging SHCN. Compared with those with consistent reports, children with parent-only identified needs had lower odds of accessing school services (odds ratio [OR], 0.29; 95% confidence interval [CI], 0.10–0.81). Similarly, children with parent-only (OR, 0.39; 95% CI, 0.20–0.75) and teacher-only (OR, 0.25; 95% CI, 0.14–0.46) identified needs had significantly lower odds of accessing services in the community. Conclusions When parent and teacher perceptions of children's emerging SHCN were inconsistent, service use was lower at school and in the community. Further efforts are needed by health and education providers to ensure that common understandings about a child's needs at school are established early in children's educational careers.
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- 2016
248. Parent and teacher perceptions of emerging special health care needs
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Meredith, O'Connor, Stefanie, Rosema, Jon, Quach, Amanda, Kvalsvig, and Sharon, Goldfeld
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Male ,Parents ,Health Knowledge, Attitudes, Practice ,Health Services Needs and Demand ,Child, Preschool ,Australia ,Humans ,Female ,Longitudinal Studies ,Self Report ,School Teachers ,Child ,Checklist - Abstract
A fifth of children enter school with special health care needs (SHCN) impacting on their physical, psychosocial or educational development, including many with emerging SHCN who often do not qualify for additional supports. This study aimed to compare the perceptions of parents and teachers on children's emerging SHCN, and explore correlates of conflicting reports.The Longitudinal Study of Australian Children (LSAC) is a nationally representative study of Australian children, which includes the abbreviated Children with Special Health Care Needs Screener. Data were analysed from a subsample of n = 720 children from the LSAC Kindergarten cohort (n = 4983) for whom teachers also completed the Australian Early Development Index checklist, a measure of early childhood development that includes teacher reported SHCN.Teachers (n = 120, 17.34%) identified more emerging SHCN than parents (n = 74, 10.74%), and reports were often discrepant. Children were more likely to have consistent reports of emerging SHCN when their parents had high levels of involvement at school (OR 4.86; 95% CI 1.08-21.80; P0.05), whereas children who came from disadvantaged family backgrounds were more likely to have teacher-only identified difficulties (OR 3.66; 95% CI 1.17-11.50; P0.05).Parents and teachers bring different perspectives to children's development and additional support needs, each of which is valuable. Greater attention should be given to ensuring that common understandings about a child's needs at school are established early in children's educational pathways.
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- 2016
249. Validation of the Client Diagnostic Questionnaire to Assess Mental Health in South African Caregivers of Children
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Mellins, Claude A., Kauchali, Shuaib, Nestadt, Danielle F., Bai, Dan, Aidala, Angela, Myeza, Nonhlahla, Craib, Murray H., Kvalsvig, Jane, Leu, Cheng-Shiun, Knox, Justin, Arpadi, Stephen, Chhagan, Meera, and Davidson, Leslie L.
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Adult ,Cross-Cultural Comparison ,Male ,Psychometrics ,Substance-Related Disorders ,Mental Disorders ,Reproducibility of Results ,Translating ,Personality Assessment ,Article ,South Africa ,Caregivers ,Child, Preschool ,Surveys and Questionnaires ,Humans ,Mass Screening ,Female ,Longitudinal Studies ,Child Care - Abstract
Given the high prevalence of mental health (MH) and substance abuse problems in low-to-middle income countries, the scarcity of MH professionals and the negative impact of psychiatric disorders on caregivers of young children, there is significant need for brief evidence-based screening tools for lay counselors to assist with MH assessment. This study aimed to validate a brief screening tool to assess psychiatric and substance use disorders, the Client Diagnostic Questionnaire (CDQ), in South Africa (SA).Data are from a longitudinal study of health and psychosocial needs in preschool children in SA. Participants included 322 Zulu-speaking, female caregivers. Following procedures of the US CDQ validation study, lay counselors interviewed participants using the translated Zulu CDQ. Subsequently a psychologist conducted a full psychiatric assessment guided by the CDQ questions. Analyses examined sensitivity, specificity and overall accuracy, comparing lay counselor and psychologist assessment.Sensitivity (73%), specificity (81%) and overall accuracy (79%) were good for the variable indicating presence of 'any diagnosis.' Among those cases identified by the psychologist as having any psychiatric diagnosis, over 70% were correctly identified by lay counselors using the CDQ (i.e., positive predictive value was greater than 70%). The false positive rate was relatively low (19%). Specificity for 'any disorder' (including substance use) and 'any psychiatric disorder' were 81% and 79%.The isiZulu CDQ is a sensitive and valid MH diagnostic screener that can be used by lay counselors with limited MH training to identify those in need of treatment and target extremely scarce MH professionals. Copyright © 2016 John WileySons, Ltd.South Africa (SA), a country heavily impacted by poverty, HIV and the legacy of Apartheid, has a high prevalence of mental health (MH) and substance abuse problems. In SA and other low-and-middle-income-countries (LMIC) there is a dearth of MH professionals. This study examined use and validity of the Client Diagnostic Questionnaire (CDQ), a brief diagnostic MH screening tool designed for use by lay counselors in HIV-affected populations. Comparing lay counsellor diagnoses on the CDQ to clinician assessment, sensitivity, specificity and overall accuracy were good at the level of 'any diagnosis.' The CDQ can be used effectively in SA and other LMIC with limited MH services to enable appropriate and efficient referral of individuals in primary care settings, supporting caregivers and the children in their care.
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- 2016
250. Describing normal development in an African setting: The utility of the Kilifi Developmental Inventory among young children at the Kenyan coast
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Jane Kvalsvig, Amina Abubakar, H. Gerry Taylor, Christopher L. King, Penny Holding, and Patricia Kitsao-Wekulo
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Psychomotor learning ,Kenya ,Social psychology (sociology) ,Infancy ,Social Psychology ,05 social sciences ,End points ,Developmental psychology ,Education ,Eye-hand co-ordination ,Locomotor ,03 medical and health sciences ,0302 clinical medicine ,parasitic diseases ,Developmental and Educational Psychology ,0501 psychology and cognitive sciences ,Identification (biology) ,Rural ,Psychology ,030217 neurology & neurosurgery ,050104 developmental & child psychology ,Kilifi Developmental Inventory ,Start points - Abstract
The Kilifi Developmental Inventory (KDI) is a tool developed in Kenya for the assessment of psychomotor development in infants and young children. We developed age-appropriate standards against which the developmental progress of individual children could be tracked. The current report is based on three studies completed among 1428 children aged between 5 and 36 months and living within rural and urban locations at the Coast of Kenya. We identified age-appropriate cut-offs and expected ranges of performance to facilitate the identification and monitoring of children with impaired psychomotor development.
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- 2016
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