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Background and Purpose The purpose of this paper was to determine if the Six-minute Walk Test (6MWT) was a reliable exercise test for patients referred to cardiac rehabilitation when up to three tests were performed and to determine if test scores differed according to between-test time interval. Methods Thirty adults aged 63 ± 7.9 years referred to cardiac rehabilitation participated in a repeated measures reliability trial. Participants completed three 6MWTs within a one-week period. Participants were randomly allocated to one of three groups: on the first day, Group A completed three walks, Group B completed two walks and Group C completed one walk. Relative reliability was expressed in a ratio (ICC2,1), and absolute reliability was expressed in metres (95% confidence intervals) for group and individuals. Results The 6MWT demonstrated a high level of relative reliability (intraclass correlation coefficients [ICC] = 0.94) across the three walks. There was no statistically significant difference between the test scores of the three groups. However, there was an increase in distance walked from the first to the second to the third 6MWT. Absolute reliability indicated that a change of at least 44 m would be required to be interpreted as true change in a group, and at least 95 m to be interpreted as true change in an individual with 95% confidence. Conclusion Three 6MWTs completed in relatively short timeframes were not sufficient for reliable results as there was an increase in the distance walked, and relatively large increases in distances would be required to be interpreted as change. It did not make any difference whether the tests were all completed on one day or over one week. This study highlighted problems that may arise when relying on reliability coefficients alone to interpret reliability. These results suggest that the 6MWT may not have sufficient reliability to be a suitable test to evaluate exercise tolerance in patients referred to cardiac rehabilitation. Copyright © 2011 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

Background Simulated patients ( SPs) are often used in dietetics for the teaching and assessment of communication skills. The present study aimed to determine the impact of a SP encounter on communication skills in undergraduate preclinical dietetic students in the context of the resources required for delivering this educational strategy. Methods This observational study collected assessment data from four cohorts of third-year dietetic students to examine the effect of participation in SP-embedded Objective Structured Clinical Exams. Students completed two SP interviews, 2 weeks apart, and communication skills were measured on both occasions. A subgroup of students received a video of their SP encounter. Differences between the two SP interview scores were compared to assess the impact of the SP encounter on communication skills. The required staff and resources were described. Results Data were collected involving 215 students. Out of 30 marks, there was a modest mean ( SD) improvement in communication skills from the first to the second SP interview of 2.5 (4.2) ( P < 0.01). There was an association between student ability and improvement in communication skills, with failing students demonstrating the greatest improvement between SP encounters. There were no observed benefits for the subset of students who received videos. Conclusions Providing repeat SP interview opportunities results in only modest improvement in communication skills for most students. The use of SPs needs to be considered in context of the substantial costs and resources involved and tailored to student ability. [ABSTRACT FROM AUTHOR]

Background Early identification of Autism Spectrum Disorder (ASD) is currently limited by the absence of reliable biological markers for the disorder, as well as the reliability of screening and assessment tools for children aged between 6 and 18 months. Ongoing research has demonstrated the importance of early social communication skills in differentiating children later diagnosed with ASD from their typically developing (TD) peers, but researchers have not yet investigated whether these differences can be detected using community-ascertained systematic observation data as early as 12 months. Aims To investigate whether differences in early social communication skills can be detected at 12 months of age, comparing children later diagnosed with ASD, and TD peers; and to determine whether differences remain when groupings are based on age of subsequent ASD diagnosis. Methods & Procedures From a prospective community-ascertained sample, we collected data on children in early life, then conducted retrospective analyses for those children who were later diagnosed with ASD by the age of 7 years, compared with matched TD peers. We analysed standardized observational data of early communication skills, collected using the Communication and Symbolic Behavior Scales-Developmental Profile (CSBS-DP) Behavior Sample, when participants were 12 months of age. Outcomes & Results Children in the ASD group exhibited significantly lower social communication skills than the TD group, including on the Total score and Social and Symbolic Composite scores of the CSBS-DP Behavior Sample. Differences on the Total score and Social Composite were also detected for both early and late ASD diagnosis groups when compared with the TD group. Conclusions & Implications These findings give further support for the importance of social communication in assessing children at risk of ASD as early as 12 months of age. Future research could evaluate the sensitivity and specificity of direct observation of these early communication skills as diagnostic indicators for ASD at 12 months, and investigate whether it is possible to distinguish between ASD and other high-risk groups (e.g. developmental delay) at this age. [ABSTRACT FROM AUTHOR]

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Background Reduced bond strengths of resin composites to hypomineralised enamel increase restorative failure. Aim To investigate if the adhesion of resin composite to hypomineralised enamel can be improved by pre-treatments: resin infiltration, oxidative pre-treatment followed by a resin infiltration, or oxidative pre-treatment. Design Twenty-one enamel specimens in each of five Groups: 1) Normal enamel; 2) Hypomineralised enamel; 3) Hypomineralised enamel pre-treated with a resin infiltrant, (Icon®); 4) Hypomineralised enamel pre-treated with 5.25% sodium hypochlorite then treatment with resin infiltrant; 5) Hypomineralised enamel pre-treated with 5.25% sodium hypochlorite. A resin composite rod was bonded to each specimen using Clearfil™ SE bond as the adhesive (hereafter termed 'routine bonding'), then subjected to microshear bond strength ( MSBS) testing. Results Overall, the mean MSBS between the five groups differed significantly ( P = 0.001). Pre-treatment of hypomineralised enamel with 5.25% sodium hypochlorite with or without subsequent resin infiltration in Groups 4 and 5 prior to routine bonding resulted in increased mean MSBS compared to Groups 2 and 3, with mean MSBS values not differing significantly when compared to routine bonding to normal enamel. Conclusion Increased bond strength of resin composite to hypomineralised enamel was obtained by pre-treatment of hypomineralised enamel specimens with 5.25% sodium hypochlorite with or without subsequent resin infiltration. [ABSTRACT FROM AUTHOR]

What is already known about this subject Food marketing has come under scrutiny for its likely contribution to promoting unhealthy eating and obesity in children., There is limited published evidence regarding the effects of food packaging promotions on children., Nutrient content claims and sports celebrity endorsements on food packs influence adults to prefer energy-dense and nutrient-poor ( EDNP) products bearing such promotions, especially among the majority who do not read the nutrition information panel., What this study adds This study experimentally tested pre-adolescent children's responses to three common food marketing techniques: nutrient content claims, sports celebrity endorsements and premium offers., On-pack nutrient content claims made pre-adolescents more likely to choose EDNP products and increased perceptions of their nutrient content., Sports celebrity endorsements made pre-adolescent boys more likely to choose EDNP products., Objectives To assess pre-adolescent children's responses to common child-oriented front-of-pack food promotions. Methods Between-subjects, web-based experiment with four front-of-pack promotion conditions on energy-dense and nutrient-poor ( EDNP) foods: no promotion [control]; nutrient content claims; sports celebrity endorsements (male athletes) and premium offers. Participants were 1302 grade 5 and 6 children (mean age 11 years) from Melbourne, Australia. Participants chose their preferred product from a randomly assigned EDNP food pack and comparable healthier food pack then completed detailed product ratings. Child-oriented pack designs with colourful, cartooned graphics, fonts and promotions were used. Results Compared to the control condition, children were more likely to choose EDNP products featuring nutrient content claims (both genders) and sports celebrity endorsements (boys only). Perceptions of nutritional content were enhanced by nutrient content claims. Effects of promotions on some product ratings (but not choice) were negated when children referred to the nutrition information panel. Premium offers did not enhance children's product ratings or choice. Conclusions Nutrient content claims and sports celebrity endorsements influence pre-adolescent children's preferences towards EDNP food products displaying them. Policy interventions to reduce the impact of unhealthy food marketing to children should limit the use of these promotions. [ABSTRACT FROM AUTHOR]

Background A number of jurisdictions have instituted legislation requiring an independent person to be present during police interviews with vulnerable people. In Victoria, Australia, a group of volunteers known as Independent Third Persons help to fulfil this role with people who present with cognitive impairment arising from their mental illness or disability. This study sought to explore the perspectives of the Independent Third Person volunteers on police identification of and responses to people with intellectual disability (ID). Methods All registered Independent Third Person volunteers across the State of Victoria in Australia were identified and sent a postal survey on their experiences and confidence in performing their role, their perceptions of police competency, and the challenges they faced working at this interface. Results Of the 207 Independent Third Persons identified, 94 (45%) completed and returned the survey. Participants reported that despite being overly reliant on previous police contacts and cues relating to communication difficulties, they viewed police as generally competent in their ability to identify people with ID. They also considered themselves confident in performing their own roles at this interface, albeit more so at the perfunctory aspects of the role and less so with the emotional aspects of supporting the person being interviewed. Conclusions Police are seen as competent at identifying those with cognitive deficits and seeking appropriate supports for the person with ID in the interview context. More specialised training for police members is recommended in communicating with people with IDs. Volunteers working at this interface require additional support and training in helping to meet the emotional needs of those being interviewed. [ABSTRACT FROM AUTHOR]

International Journal of Paediatric Dentistry 2013; 23: 2-12 Background. Hypomineralised enamel is a prevalent, congenital defect vulnerable to deteriorate post-eruptively particularly in the presence of an unfavourable oral environment. Aims. To assess the influence of salivary characteristics on the clinical presentation of hypomineralisation lesions diagnosed in first permanent and second primary molars and to evaluate caries severity in relation to the defect's clinical presentation. Design. Recruitment consisted of 445 seven- to nine-year-old participants, of whom 152 were diagnosed as having molar hypomineralisation (MH); the remaining unaffected subjects ( N = 293) were considered their controls for saliva analysis. Dental caries status was assessed in 300 subjects of saliva sub-sample, equally divided as MH-affected and non-affected children. The International Caries Detection and Assessment System was used for caries detection. Salivary flow rates, viscosity, pH, and buffering capacity were determined. Results. Molar hypomineralisation-affected children have significantly higher mean caries scores compared to the non-affected group. Dentinal carious lesions were ten times more frequent in teeth with post-eruptive breakdown (PEB) than with teeth with opacities only. Low salivary flow rates (LSFR), moderately viscous saliva, and low pH were significantly more common in the affected group. LSFR and moderate and highly acidic saliva were more likely associated with PEB. Conclusion. Demarcated hypomineralised enamel is a dynamic defect highly influenced by individual characteristics of the oral environment. [ABSTRACT FROM AUTHOR]

Objective To quantify late-pregnancy weight gain in women with and without gestational diabetes mellitus ( GDM) and to determine factors associated with gestational weight gain. Study design A prospective clinical audit of 212 women (115 GDM and 97 non- GDM) who were weighed at each antenatal visit from 24-32 weeks gestation until delivery. Women received routine antenatal clinical care. For women with GDM, this included a 2-h lifestyle counselling session, capillary blood glucose testing and frequent clinical review. Results Women with GDM gained less weight than nondiabetic women ( GDM: 1.18 kg (1.6%) [range, 3.8-7.1 kg]; non- GDM: 4.0 kg (4.8%) [range, 0.7-18.5 kg]; P < 0.0001). Weight gain was influenced by body mass index and country of birth. Women with GDM showed reduced weight gain at weeks 1-4 postrecruitment, relative to weeks 4-8 (0.04 kg/week vs 0.45 kg/week; P < 0.0001). Nondiabetic women gained weight at a constant rate. GDM status was the only independent predictor of postrecruitment weight gain. Conclusions Application of a model of care for GDM (lifestyle advice and regular clinical review, in addition to home glucose monitoring) may reduce weight gain in women with GDM. The potential for applying a modified version of this model to all women in pregnancy warrants further study. [ABSTRACT FROM AUTHOR]

Background This study investigated the experiences and perceptions of operational members of Victoria Police in relation to their contacts with people with intellectual disability (ID). Key interests for exploration included how frequently and in what context police reported coming into contact with people with ID, how they made this identification, and the challenges they experienced at this interface. Methods Participants comprised 229 operational police members who attended mandatory firearms training sessions over a 2-week period in Melbourne, Australia. Results Police reported coming into contact with people they believed to have an ID on a regular basis and for a wide variety of reasons. They were most likely to base their knowledge on job-related experiences and were most likely to identify individuals on the basis of physical and behavioural cues. The most common challenges were communication, and gaining access to assistance and co-operation from other service providers. While many considered themselves capable in their interactions with those with ID, those who identified that they were most in need of training reported lower confidence in how to respond in these encounters. Conclusions Future training needs to focus on differentiating between mental illness and ID, techniques for enhancing identification and communication, and the inclusion of hands-on scenario-based sessions involving an interdisciplinary approach. [ABSTRACT FROM AUTHOR]

Background: In-hospital formula supplementation of breastfed newborns is commonplace despite its negative association with breastfeeding duration. Although several studies have described the use of formula supplementation, few have explored the factors that may be associated with its use. The aim of this study was to explore factors associated with in-hospital formula supplementation using data from a large Australian population-based survey. Methods: All women who gave birth in September and October 2007 in two Australian states were mailed questionnaires 6 months after the birth. Women were asked how they fed their baby while in hospital after the birth. Multivariable logistic regression was used to explore specified a priori factors associated with in-hospital formula supplementation. Results: Of 4,085 women who initiated breastfeeding, 23 percent reported their babies receiving formula supplementation. Breastfed babies had greater odds of receiving formula supplementation if their mother was primiparous (adj. OR = 2.16; 95% CI: 1.76-2.66); born overseas and of non-English-speaking background (adj. OR = 2.03; 95% CI: 1.56-2.64); had a body mass index more than 30 (adj. OR = 2.27; 95% CI: 1.76-2.95); had an emergency cesarean section (adj. OR = 1.72; 95% CI: 1.3-2.28); or the baby was admitted to a special care nursery (adj. OR = 2.72; 95% CI: 2.19-3.4); had a birthweight less than 2,500 g (adj. OR = 2.02; 95% CI: 1.3-3.15) or was born in a hospital not accredited with Baby-Friendly Hospital Initiative (BFHI) (adj. OR = 1.53; 95% CI: 1.2-1.94). Conclusions: The number of factors associated with in-hospital formula supplementation suggests that this practice is complex. Some results, however, point to an opportunity for intervention, with the BFHI appearing to be an effective strategy for supporting exclusive breastfeeding. (BIRTH 38:4 December 2011) [ABSTRACT FROM AUTHOR]

Objective: To identify factors influencing the choice of practice location for early career pharmacists working and living in Victoria. Design: Survey. Setting: Victorian pharmacies. Participants: Pharmacists living in Victoria in April 2009, who had registered with the Pharmacy Board of Victoria after 1 October 2004, stratified into major city and rural areas. Main outcome measures: Questionnaire responses analysed via descriptive statistics, chi-square and direct logistic regression. Results: Early career pharmacists were more likely to practice in a rural location if they had undertaken a rural internship, had a spouse or partner with a non-metropolitan background and were not practicing in a hospital pharmacy. Pharmacists who had lived in a rural area during their childhood and had studied pharmacy at a rural university were four times more likely to have undertaken a rural internship than those that studied at a major city university. Conclusions: The strongest indicator for future practice location was a pharmacist's internship location. Childhood location and pharmacy education location were indicators of internship location. Pharmacists with a rural childhood location, especially those who study at rural universities, are more likely to work in rural areas. [ABSTRACT FROM AUTHOR]

ABSTRACT Aims To assess the association between access to off-premises alcohol outlets and harmful alcohol consumption. Design, setting and participants Multi-level study of 2334 adults aged 18-75 years from 49 census collector districts (the smallest spatial unit in Australia at the time of survey) in metropolitan Melbourne. Measurements Alcohol outlet density was defined as the number of outlets within a 1-km road network of respondents' homes and proximity was the shortest road network distance to the closest outlet from their home. Using multi-level logistic regression we estimated the association between outlet density and proximity and four measures of harmful alcohol consumption: drinking at levels associated with short-term harm at least weekly and monthly; drinking at levels associated with long-term harm and frequency of consumption. Findings Density of alcohol outlets was associated with increased risk of drinking alcohol at levels associated with harm. The strongest association was for short-term harm at least weekly [odds ratio (OR) 1.10, 95% confidence interval (CI) 1.04-1.16]. When density was fitted as a categorical variable, the highest risk of drinking at levels associated with short-term harm was when there were eight or more outlets (short-term harm weekly: OR 2.36, 95% CI 1.22-4.54 and short-term harm monthly: OR 1.80, 95% CI 1.07-3.04). We found no evidence to support an association between proximity and harmful alcohol consumption. Conclusions The number of off-premises alcohol outlets in a locality is associated with the level of harmful alcohol consumption in that area. Reducing the number of off-premises alcohol outlets could reduce levels of harmful alcohol consumption. [ABSTRACT FROM AUTHOR]

BSTRACT [ABSTRACT FROM AUTHOR]

Background: At least two-thirds of the world's children grow up in environments where more than one language is spoken. Despite the global predominance of multilingualism, much remains unknown regarding the language acquisition of children acquiring multiple languages compared with monolingual children. A greater understanding of multilingualism is crucial for speech-language pathologists given the increasing number of children being raised in linguistically diverse environments. Aims: To investigate the expressive morphological abilities of multilingual children acquiring English, compared with monolingual children, at 3 years of age. Methods & Procedures: Participants were 148 children (74 multilingual children; 74 matched monolingual children; mean age of 3 years 4 months) already participating in a larger prospective longitudinal cohort study of language development in Melbourne, Australia. Thirty-one languages in addition to English were represented within the embedded cohort. All participants completed a direct language assessment to measure their expressive abilities across a range of English morphemes. The parents of the multilingual participants completed an interview regarding the children's language backgrounds and experiences. Outcomes & Results: The Multilingual Group typically performed below the Monolingual Group in terms of their accurate use and mastery of English morphemes at 3 years of age, although variable expressive abilities were indicated within each group. The same morphemes were shown to be mastered by relatively higher proportions of each group. Likewise, the same forms were mastered by relatively lower proportions of each group. The results indicated similarities between the children's acquisition of English morphology, regardless of whether they were acquiring English only or in combination with another language(s) at 3 years of age. Conclusions & Implications: This study found a range of similarities and differences between multilingual compared with monolingual children's acquisition of English morphology at 3 years of age. The findings have important implications for researchers and clinicians involved in the management of linguistically diverse populations by advancing knowledge of early multilingual English morpheme acquisition and building awareness of acquisition patterns among multilingual and monolingual English-speaking children at 3 years of age. [ABSTRACT FROM AUTHOR]

A small number of studies have identified a positive relationship between alcohol outlet density and domestic violence. These studies have all been based on cross-sectional data and have been limited to the assessment of ecological correlations between outlet density and domestic violence rates. This study provides the first longitudinal examination of this relationship. Cross-sectional time-series using aggregated data from small areas. The relationships between alcohol outlet density and domestic violence were assessed over time using a fixed-effects model. Controls for the spatial autocorrelation of the data were included in the model. The study uses data for 186 postcodes from within the metropolitan area of Melbourne, Australia for the years 1996 to 2005. Alcohol outlet density measures for three different types of outlets (hotel/pub, packaged liquor, on-premise) were derived from liquor licensing records and domestic violence rates were calculated from police-recorded crime data, based on the victim's postcode. Alcohol outlet density was associated significantly with rates of domestic violence, over time. All three licence categories were positively associated with domestic violence rates, with small effects for general (pub) and on-premise licences and a large effect for packaged liquor licences. Conclusions: In Melbourne, the density of liquor licences is positively associated with rates of domestic violence over time. The effects were particularly large for packaged liquor outlets, suggesting a need for licensing policies that pay more attention to o off-premise alcohol availability. [ABSTRACT FROM AUTHOR]

In Australia, birth rates for women aged 35 years or more are significant and increasing and a considerable percentage are first births. This study investigated the effect of maternal age on interventions in labor and birth for primiparous women aged 35 to 44 years compared with primiparous women aged 25 to 29 years. Methods: All primiparous women who gave birth in Victoria, Australia, in 2005 and 2006 ( n = 57,426) were included in this population-based cross-sectional study. Women were stratified by admission status (private/public). Main outcome measures were induction of labor, augmentation of labor, use of epidural analgesia, and method of birth. Multivariate logistic regression was used to explore the relationship between maternal age and cesarean adjusted for confounders. Older women were more likely to give birth by cesarean section whether admitted as public or private patients. For private patients, total cesarean rates were 31.8 percent (25-29 yr), 46.0 percent (35-39 yr), and 60.0 percent (40-44 yr; p < 0.001) compared with 27.5, 41.6, and 53.4 percent for public patients ( p < 0.001). Older women who experienced labor were more likely to have an instrumental vaginal birth or an emergency cesarean section than younger women. Both were more common in women admitted as private patients. Age-related trends were also seen for induction of labor and use of epidural analgesia. Rates were higher for private patients. Rates of induction were (37.8, 40.2, and 42.5%) for private patients compared with (32.1, 36.7, and 40.1%) for public patients and rates for epidural were (45.3, 49.9, and 48.1%) among private patients compared with (33.3, 38.8, and 39.3%) among public patients. Interventions in labor and birth increased with maternal age, and this effect was seen particularly for cesarean section among women admitted privately. These findings were not fully explained by the complications we considered. (BIRTH 38:1 March 2011) [ABSTRACT FROM AUTHOR]

The purpose of this study was to develop and validate a pressure ulcer risk assessment for acute hospitals. This tool was developed in a cohort of 342 patients with a mean age 63 years (SD 19.82) and validated in a second cohort of 165 patients with a mean age 68 years (SD 18.40). Risk factors for inclusion on The Northern Hospital Pressure Ulcer Prevention Plan (TNH-PUPP) were identified from the literature then examined and weighted using logistic regression. Risk factors included on the TNH-PUPP were requires assistance to move in bed (odds ratio [OR] 5.15; 95% confidence interval [CI]: 2.49-10.65), admission to intensive care during current admission (OR 2.98; 95% CI: 1.33-6.67), aged ≥65 years (OR 2.81; 95% CI: 1.24-6.36), reduced sensation (OR 2.29; 95% CI: 1.19-4.42), and cognitive impairment (OR 2.26; 95% CI: 1.09-4.67). The TNH-PUPP was validated in a prospective sample. The new tool had high diagnostic validity (area under the receiver operating curve=0.86), consistent in the validation sample (area under the receiver operating curve=0.90). The TNH-PUPP has a moderate positive predictive value (development=0.50; validation=0.13), and a high negative predictive value (development=0.94; validation=0.99) enabling low-risk patients to be screened out, as noncandidates for pressure ulcer prevention interventions. An accurate pressure ulcer risk assessment has been developed and validated, which identifies a high-risk group to whom limited pressure ulcer prevention resources should be directed. The TNH-PUPP facilitates effective resource allocation and is likely to reduce unnecessary patient harm and costs from pressure ulcers in acute hospitals. [ABSTRACT FROM AUTHOR]

Background: Trauma registry data are usually incomplete. Various methods for dealing with missing data have been used, some of which lead to biased results. One method that reduces bias, multiple imputation (MI), has not been widely adopted. There is no standardization of the approach to missing data across trauma registries. Objectives: This study examined the effect of using selected methods for handling missing data on a recognized trauma outcome measure. Methods: Data from the Victorian State Trauma Registry (VSTR) were used for the period July 2003 to June 2008. Three methods for handling missing data were investigated: complete case analysis, single imputation, and MI. The latter was applied using five distinct models, each with a different combination of variables (Trauma and Injury Severity score [TRISS] variables; prehospital Glasgow Coma Scale [GCS], respiratory rate, and systolic blood pressure; arrival by ambulance; transfer to a second hospital; and whether the GCS was 'legitimate' according to the TRISS definition). For each method, TRISS analysis (comparing actual and expected deaths) was performed; the W-score and Z-statistic were derived. A Z-statistic greater than 1.96 in absolute value was considered statistically significant. Results: Of 10,180 cases, 2,398 (24%) were missing at least one of the component variables necessary for TRISS analysis. With the use of complete case analysis, the W-score was 0.54 unexpected survivors for every 100 cases, with a Z-statistic of −1.96. Using two approaches to single imputation, the W-scores were −1.41, with Z-statistics of −5.19 and −5.30. Applying four of the five combinations of variables used for MI, there was a statistically significant number of unexpected survivors (W = −0.60, Z = −2.23; W = −0.52, Z = −1.97; W = −0.53, Z = −1.97; W = −0.63, Z = −2.24). However, using MI confined to TRISS variables only, there was a statistically significant number of unexpected deaths (W = +0.52, Z = +1.98). Conclusions: Missing data methods can influence the assessment of trauma care performance and need to be reported in all analyses. It is important that validated standardized approaches to dealing with missing data are universally adopted and reported. ACADEMIC EMERGENCY MEDICINE 2010; 17:1122-1129 © 2010 by the Society for Academic Emergency Medicine [ABSTRACT FROM AUTHOR]