15 results on '"Wickens N"'
Search Results
2. Acute toxicity and 28-day oral administration of euclea natalensis extract in Swiss albino mice
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Shauli, M, primary, Sewani-rusike, C, additional, Abura, S, additional, Kolosa, I, additional, Gondwe, MM, additional, Gari, M, additional, Gqaza, B, additional, Rajesh, N, additional, Wickens, N, additional, and Smith, N, additional
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- 2023
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3. #TraumaTok-TikTok Videos Relating to Trauma: Content Analysis.
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Woolard A, Paciente R, Munro E, Wickens N, Wells G, Ta D, Mandzufas J, and Lombardi K
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- Humans, Cross-Sectional Studies, Video Recording, Female, Male, Adult, Psychological Trauma, Young Adult, Social Media
- Abstract
Background: Experiencing a traumatic event can significantly impact mental and emotional well-being. Social media platforms offer spaces for sharing stories, seeking support, and accessing psychoeducation. TikTok (ByteDance), a rapidly growing social media platform, is increasingly used for advice, validation, and information, although the content of this requires further study. Research is particularly needed to better understand TikTok content relating to trauma and the potential implications for young viewers, considering the distressing nature of the subject and the possibility of users experiencing vicarious trauma through exposure to these videos., Objective: This study aims to explore the content of trauma-related videos on TikTok, focusing on hashtags related to trauma. Specifically, this study analyzes how TikTok videos present information, advice, stories, and support relating to trauma., Methods: A quantitative cross-sectional descriptive content analysis was performed on TikTok in December 2022. A total of 5 hashtags related to trauma were selected: #trauma, #traumatized, #traumatok, #traumatic, and #traumabond, with the top 50 videos from each hashtag analyzed (total N=250 videos). A standardized codebook was developed inductively to analyze the content of the videos, while an existing generic codebook was used to collect the video features (eg, age of people in the video) and metadata (likes, comments, and shares) for each video., Results: A total of 2 major content themes were identified, which were instructional videos (54/250, 21.6%) and videos disclosing personal stories (168/250, 67.3%). The videos garnered significant engagement, with a total of 296.6 million likes, 2.3 million comments, and 4.6 million shares, indicating that users find this content engaging and useful. Alarmingly, only 3.7% (9/250) of videos included a trigger warning, despite many featuring highly distressing stories that young people and those with trauma may be exposed to., Conclusions: The study highlights the potential risks of vicarious trauma due to trauma dumping without trigger warnings on TikTok, and the need for further research to assess the accuracy of advice and information in these videos. However, it also underscores the platform's potential to foster social connections, provide validation, and reduce stigma around mental health issues. Public health professionals should leverage social media to disseminate accurate mental health information, while promoting user education and content moderation to mitigate potential harms. People often use social media, such as TikTok to share advice, stories, and support around mental health, including their experiences with trauma. Out of 250 videos, most were either giving advice (54/250, 21.6%) or sharing personal experiences (168/250, 67.3%). The study found many videos lacked warnings about upsetting content, which could potentially harm young viewers or people suffering from trauma. While TikTok can help people feel connected and reduce the stigma around mental health, it is important to seek support from professionals when needed., (©Alix Woolard, Rigel Paciente, Emily Munro, Nicole Wickens, Gabriella Wells, Daniel Ta, Joelie Mandzufas, Karen Lombardi. Originally published in JMIR Formative Research (https://formative.jmir.org), 07.11.2024.)
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- 2024
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4. Diet culture on TikTok: a descriptive content analysis.
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Munro E, Wells G, Paciente R, Wickens N, Ta D, Mandzufas J, Lombardi K, and Woolard A
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- Humans, Female, Male, Cross-Sectional Studies, Adolescent, Feeding and Eating Disorders psychology, Young Adult, Feeding Behavior psychology, Diet, Healthy, Diet statistics & numerical data, Internet, Video Recording, Social Media, Adult, Body Image psychology
- Abstract
Objective: To investigate how dieting is portrayed on TikTok and the potential implications for public health considering the effect of diet culture on eating disorders amongst young people., Design: A cross-sectional descriptive content analysis of 250 videos from the five most popular diet-related hashtags. A codebook was developed to analyse the content of the videos and collect the engagement for each video (likes, comments and shares)., Setting: TikTok website., Participants: There were no participants in this study., Results: More than half of the videos portrayed 'body checking', a potentially harmful practice for body image. Of the videos that represented body image, almost half represented body image negatively. However, most videos promoted the idea of 'healthy eating', and only 6·4 % displayed disordered eating behaviours. Over half of the videos provided dietary advice, and of those videos, most content creators claimed to be experts (64 %). Claiming expertise was not significantly associated with engagement; however, the use of humour was significantly associated with engagement. Additionally, males were more likely than females to disclose their goals of the diet., Conclusions: Overall, it appears that TikTok is commonly used to share nutrition tips and personal experiences around dieting and eating in general, often employing humour as an effective technique. The popularity of the platform and rapid dissemination of information would be a useful tool for health professionals, especially those working with eating disorders, to utilise.
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- 2024
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5. A wellbeing program to promote mental health in paediatric burn patients: Study protocol.
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Wickens N, McGivern L, de Gouveia Belinelo P, Milroy H, Martin L, Wood F, Bullman I, Janse van Rensburg E, and Woolard A
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- Adolescent, Humans, Child, Mental Health, Social Behavior, Problem Solving, Burns psychology, Resilience, Psychological
- Abstract
Background: One of the most traumatic injuries a child can experience is a severe burn. Despite improvements in medical treatments which have led to better physical outcomes and reduced mortality rates for paediatric burns patients, the psychological impact associated with experiencing such a traumatic injury has mostly been overlooked. This is concerning given the high incidence of psychopathology amongst paediatric burn survivors., Objectives: This project will aim to pilot test and evaluate a co-designed trauma-focused intervention to support resilience and promote positive mental health in children and adolescents who have sustained an acute burn injury. Our first objective is to collect pilot data to evaluate the efficacy of the intervention and to inform the design of future trauma-focussed interventions. Our second objective is to collect pilot data to determine the appropriateness of the developed intervention by investigating the changes in mental health indicators pre- and post-intervention. This will inform the design of future interventions., Methods: This pilot intervention study will recruit 40 children aged between 6-17 years who have sustained an acute burn injury and their respective caregivers. These participants will have attended the Stan Perron Centre of Excellence for Childhood Burns at Perth Children's Hospital. Participants will attend a 45-minute weekly or fortnightly session for six weeks that involves building skills around information gathering, managing reactions (behaviours and thoughts), identifying, and bolstering coping skills, problem solving and preventing setbacks. The potential effects and feasibility of our intervention will be assessed through a range of age-appropriate screening measures which will assess social behaviours, personal qualities, mental health and/or resilience. Assessments will be administered at baseline, immediately post-intervention, at 6- and 12-months post-intervention., Conclusion: The results of this study will lay the foundation for an evidence-based, trauma-informed approach to clinical care for paediatric burn survivors and their families in Western Australia. This will have important implications for the design of future support offered to children with and beyond burn injuries, and other medical trauma populations., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Wickens et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2024
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6. "It's a big trauma for the family": A qualitative insight into the psychological trauma of paediatric burns from the perspective of mothers.
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Wickens N, van Rensburg EJ, de Gouveia Belinelo P, Milroy H, Martin L, Wood F, and Woolard A
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- Female, Child, Humans, Adolescent, Mothers, Stress, Psychological psychology, Western Australia, Qualitative Research, Family, Burns therapy, Burns psychology, Psychological Trauma
- Abstract
Background: Despite the medical and surgical improvements of paediatric burn injuries, burn injuries can be a painful and traumatic experience for the child and their family. It is therefore important to explore the experiences of caregivers who support their child throughout the burn journey. Thus, the purpose of this study was to explore the traumatic nature of paediatric burns on the family from a caregiver's perspective., Methods: This study used a descriptive qualitative approach to conduct online semi-structured interviews with caregivers (18 years and older) of children (aged four to 17 years) that had previously been admitted with an unintentional acute burn injury to a paediatric burns unit in Western Australia. Interviews explored the child's and caregiver's experiences throughout the burn journey from the perspective of the caregiver and were digitally recorded and transcribed verbatim. Transcripts were analysed using Braun and Clarke's six stages of reflexive thematic analysis., Results: Eleven mothers participated in the interviews and identified a range of poor psychological and psychosocial outcomes that themselves and their child experienced. Three overarching themes were elaborated from the interviews: Child and caregiver mental health difficulties during and after the burn (including medical trauma, mental health outcomes and caregiver guilt); Lifestyle and physical changes following the burn (including disruptions to routine, appearance concerns and puberty); and factors supporting or inhibiting the recovery journey (including personality factors, coping strategies, family dynamics and support)., Final Considerations: This study has presented the difficulties that children, young people, and their family face throughout a paediatric burn injury, which makes the implementation of timely and effective family centred interventions imperative. Meeting the needs and supporting these families with their mental health throughout this traumatic recovery journey, can ensure positive psychosocial outcomes and adaptive coping strategies are adopted early on., Competing Interests: Declaration of Competing Interest None., (Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.)
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- 2024
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7. Treatment for childhood and adolescent dissociation: A systematic review.
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Woolard A, Boutrus M, Bullman I, Wickens N, Gouveia Belinelo P, Solomon T, and Milroy H
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Objective: Dissociative symptoms are linked to experiences of trauma, often originating in childhood and adolescence. Dissociative disorders are associated with a high burden of illness and a poor quality of life. Despite evidence suggesting that early intervention can improve outcomes, little research exists on the treatment of dissociative disorders in childhood and adolescence. The current study aimed to systematically review the existing body of literature to identify current treatments applied within child and adolescent populations diagnosed with a dissociative disorder., Method: This review was conducted in line with PRISMA guidelines. Databases were searched for relevant publications, resulting in 3,064 papers to be screened. Articles were included if they involved child or adolescent populations experiencing dissociation and undergoing treatment. Seven articles were included in the current review: two quantitative and five case studies., Results: Treatment duration varied greatly, ranging from 1 to 29 months. Treatments were mostly combinations of psychotherapy, dialectical behavior therapy, eye movement desensitization and reprocessing, as well as adjunctive therapies such as mindfulness and psychoeducation., Conclusions: Our study demonstrated that the literature on current treatment for children and adolescents is clearly scarce, with only seven studies, five of which were case studies and two of which were over 20 years old. The treatments used for dissociation in children and adolescents experiencing dissociation were varied, but psychotherapy was the most used treatment method. This review has revealed that there is no clear framework that exists for the treatment of dissociation in child and adolescent patients, despite the need for one. (PsycInfo Database Record (c) 2024 APA, all rights reserved).
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- 2024
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8. Powerful promotions: An investigation of the teen-directed marketing power of outdoor food advertisements located near schools in Australia.
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Wells G, Trapp G, Wickens N, and Heritage B
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- Adolescent, Humans, Cross-Sectional Studies, Marketing, Australia, Ethanol, Schools, Beverages, Advertising, Food
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Issue Addressed: Adolescents are heavily exposed to unhealthy outdoor food advertisements near schools, however, the marketing power of these advertisements among adolescents has not yet been explored. This study aimed to investigate the teen-directed marketing features present and quantify the overall marketing power of outdoor food advertisements located near schools to explore any differences by content (ie, alcohol, discretionary, core and miscellaneous foods) school type (ie, primary, secondary, K-12) and area-level socio-economic status (SES; ie, low vs high)., Methods: This cross-sectional study audited every outdoor food advertisement (n = 1518) within 500m of 64 randomly selected schools in Perth, Western Australia, using a teen-informed coding tool to score the marketing power of each advertisement., Results: Outdoor alcohol advertisements around schools had the highest average marketing power score and number of advertising features present. Outdoor advertisements for alcohol and discretionary foods scored significantly higher in marketing power than core food advertisements (P < .001). Outdoor alcohol advertisements around secondary schools scored significantly higher in marketing power than around primary and K-12 schools (P < .001); and outdoor advertisements for discretionary foods in low SES areas scored significantly higher in marketing power than those in high SES areas (P < .001)., Conclusions: This study found outdoor advertisements for unhealthy products, such as alcohol and discretionary foods, were more powerful than advertisements for core foods around schools. SO WHAT?: These findings strengthen the need for policies which restrict outdoor advertisements for non-core foods near schools, to reduce adolescents' exposure to powerful alcohol and discretionary food advertisements., (© 2023 Australian Health Promotion Association.)
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- 2024
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9. "I just get scared it's going to happen again": a qualitative study of the psychosocial impact of pediatric burns from the child's perspective.
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Woolard A, Wickens N, McGivern L, de Gouveia Belinelo P, Martin L, Wood F, Janse van Rensburg E, and Milroy H
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- Humans, Child, Adolescent, Mental Health, Adaptation, Psychological, Social Support
- Abstract
Background: Advances in medicine have improved the chances of survival following burn injuries, however, psychosocial outcomes have not seen the same improvement, and burn injuries can be distressing for both the child or young person, negatively affecting their wellbeing. Pediatric burn patients are at a higher risk of developing psychopathology compared to the general population. In order to promote resilience and prevent psychopathology post-burn injury for pediatric burn patients, it is crucial to understand the experience of children and young people after a burn. This study aimed to understand the psychosocial impact that a pediatric burn has as perceived by the pediatric burn patient., Methods: Seven pediatric burn patients were interviewed from the Perth Metropolitan area on average 3.1 years after their injury. All participants had been admitted to hospital for their acute injury and stayed for a median length of 2 days in hospital. Interviews with pediatric patients took place online, and the patients were asked about their mental health, coping strategies, changes to lifestyle and supports following their burn injury. The interviews were transcribed and then thematically analysed using an inductive approach., Results: Three overarching themes were developed from the interviews: burn-specific impact on the child or young person (including appearance concerns, family factors, and lifestyle factors), the psychological impact (including positive and negative impact on mental health), and factors supporting the recovery journey (including coping strategies and support services). The participants in our study highlighted issues they faced during recovery, the positive and negative impacts of the injury and recovery process and provided suggestions for future opportunities to bolster resilience and promote growth for pediatric burn patients who may face similar challenges in the future., Conclusion: Factors that improve the mental health and wellbeing of pediatric burn patients should be promoted, such as mental health and social supports, the promotion of adaptive coping mechanisms, and meeting the needs of the family unit as a whole. Ultimately, the implementation of trauma-focused, family centred interventions is crucial for the psychosocial recovery of pediatric burn survivors., (© 2023. The Author(s).)
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- 2023
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10. Children's exposure to outdoor food advertising near primary and secondary schools in Australia.
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Trapp G, Hooper P, Thornton L, Kennington K, Sartori A, Wickens N, Mandzufas J, and Billingham W
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- Australia, Beverages, Cross-Sectional Studies, Fast Foods, Food Industry, Humans, Schools, Television, Advertising, Food
- Abstract
Issue Addressed: Previous research has highlighted children's frequent exposure to advertisements of unhealthy food and beverages on television. However, the food industry is increasingly utilising non-broadcast channels such as outdoor advertising (eg billboards, bus shelters, shop fronts) for product marketing. Few studies have investigated children's exposure to outdoor food advertising around primary and secondary schools. This study aimed to quantify the presence and content of outdoor food advertisements within a 500 m radius of primary and secondary schools in Perth, Western Australia., Methods: A cross-sectional design was used to capture outdoor advertisements within a 500 m radial buffer around the school boundary. The INFORMAS protocol for monitoring outdoor advertising around child-serving institutions was used. Sixty-four primary and secondary schools in Perth, Australia, were selected using random sampling within socio-economic and population density strata., Results: In total, 5636 outdoor advertisements were identified within a 500 m radius of all 64 schools combined and 30% were for food. Of the 1708 food advertisements, 74% were for unhealthy (non-core) food. The most frequently advertised food products were alcohol, fast food and sugar-sweetened beverages. Only 8% of food advertisements featured a healthy product. The majority of schools (75%) had at least one food advertisement within 500 m (mean 36, range 3-190). Schools in lower socio-economic areas had more food advertisements and a significantly higher proportion of unhealthy food advertisements within 250 m., Conclusion: Outdoor advertising around schools constitutes a potential frequent source of children's exposure to unhealthy food and alcohol advertising. SO WHAT?: Policy interventions restricting the content of outdoor food advertising near schools are needed., (© 2021 Australian Health Promotion Association.)
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- 2022
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11. Exposure to unhealthy food and beverage advertising during the school commute in Australia.
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Trapp G, Hooper P, Thornton LE, Kennington K, Sartori A, Wickens N, and Billingham W
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- Australia, Beverages, Child, Food, Food Industry, Humans, Schools, Television, Transportation, Advertising, Pediatric Obesity epidemiology, Pediatric Obesity prevention & control
- Abstract
Background: Food marketing exposure has the potential to influence children's dietary behaviours and health status, however, few studies have identified how 'obesogenic' the outdoor food marketing environment is along public transport (bus and/or train) or walking routes that children take to school., Methods: Audits of all outdoor advertisements present along likely train, bus and walking routes to 24 secondary schools (ie, 3 routes per school, 72 routes total) were conducted in Perth, Western Australia (WA). The size, content, type and setting of each advertisement were recorded in accordance with the International Network for Food and Obesity/non-communicable diseases Research, Monitoring and Action Support protocol for monitoring outdoor advertising., Results: Of the 4016 total advertisements observed, almost half were for food (n=1754, 44%) and of these, 80% (n=1397) advertised discretionary (non-core) foods, and 8% (n=138) advertised healthy (core) foods. On average, commuting to school by train, bus and walking exposed Perth schoolchildren to 37.1, 22 and 4.5 discretionary (non-core) food ads per one-way trip to school, respectively., Conclusions: Children living in Perth, WA experience a high level of exposure to unhealthy outdoor food advertisements during the school commute. Policies which restrict the placement and content of outdoor advertising, could be a useful strategy in the fight against childhood obesity., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2021. No commercial re-use. See rights and permissions. Published by BMJ.)
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- 2021
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12. Short- and long-term effect of colorectal cancer targeting peptides conjugated to gold nanoparticles in rats' liver and colon after single exposure.
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Adewale OB, Cairncross L, Xakaza H, Wickens N, Anadozie SO, Davids H, and Roux S
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Peptides play important roles in the diagnosis, prognostic predictors, and treatment of various kinds of cancer. Peptides (p.C, p.L and p.14), derived from the phage display peptide libraries, specifically binds to colorectal cancer (CRC) cells in vitro. To allow tumor specificity and selectivity for in vivo diagnosis of CRC, biotinylated p.C, p.L and p.14 were conjugated to AuNPs (14 nm) via the biotin-streptavidin interaction. Male Wistar rats were intravenously injected with a single dose (100 µg/kg body weight) of AuNPs (citrate-AuNPs, PEG-AuNPs, p.C-PEG-, p.L-PEG- and p.14-PEG-AuNPs). Animals were monitored for behavioral changes, and sacrificed either 14 days or 84 days post-injection. Biochemical changes, oxidative stress, and histology of the liver and colon were assessed. No significant changes were noted in the rats injected with all the AuNPs, except p.L-PEG-AuNPs that caused significant toxicity ( p < 0.05) 14 days post-exposure when compared to control group, as evidenced by increased relative liver weight, increased malondialdehyde levels and histological changes in the liver. These changes, however, returned to normalcy 84 days post-injection. It can be concluded, based on these findings, that p.L induced a transient toxicity in rats after a single intravenous injection, and can therefore be considered non-toxic long-term after a single exposure., Competing Interests: Conflict of interestsThe authors declare no conflict of interest with this work. This work is contained in the PhD thesis of Olusola B. Adewale at Nelson Mandela University, South Africa. Part of this work has been presented at the 14th International Conference of Nanosciences and Nanotechnologies, 4–7 July 2017, Thessaloniki, Greece, and LAUTECH NANO Conference, 22–24 October 2019, Ogbomoso, Nigeria., (© Korean Society of Toxicology 2021.)
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- 2021
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13. Early childhood caries, primary caregiver oral health knowledge and behaviours and associated sociological factors in Australia: a systematic scoping review.
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Andrew L, Wallace R, Wickens N, and Patel J
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- Australia epidemiology, Child, Child, Preschool, Dental Caries Susceptibility, Humans, Oral Health, Sociological Factors, Caregivers, Dental Caries epidemiology, Dental Caries prevention & control
- Abstract
Background: Early childhood caries disproportionately affects vulnerable groups and remains a leading cause of preventable hospital admissions for Western Australian children. The Western Australia State Oral Health Plan seeks to improve child oral health through universal and targeted health promotion initiatives with primary caregivers. These initiatives require evidence of primary caregiver oral health knowledge and behaviours and baseline data on early childhood caries. The objective of this systematic scoping review was to understand current oral health knowledge and practices of primary caregivers of children aged 0-4 years, identify influential socioecological determinants, and identify data on early childhood caries in the Western Australian context., Methods: A systematic scoping review framework identified articles published between 2010 and 2021, using Scopus, PubMed, Medline, CINAHL, PsycINFO, selected article reference lists, and oral health websites. The lack of Western Australian specific literature prompted the inclusion of Australia-wide articles. Articles were screened via author consensus, with eight selected., Results: Western Australia and nation-wide data on early childhood caries are limited and mostly dated. WA data from children aged 2-3 years, collected in 2006, suggests the prevalence is 2.9% in this state, with national data of children from 0 to 3 years, collected from 2006 and 2008, suggesting an early childhood caries prevalence of 3.4-8% of children aged 18 months, rising sharply by 36 months of age. Nationally, fewer than half the primary caregivers reported following evidence-based oral health recommendations for their young children. Perceptions of the role of dental services for young children tends to be focussed on treatment, rather than surveillance and prevention. Knowledge of dietary and oral hygiene practices is inconsistent and awareness of the Child Dental Benefit Schedule low. Young children's oral health status is clearly associated with socioecological factors, including socioeconomic status., Conclusions: Recent early childhood caries data and evidence of primary care-givers' oral health knowledge and behaviours are unavailable in Western Australia, a similar situation exists nationwide. To realise the Western Australian and National Oral Health Plans, research is required to address this knowledge gap., (© 2021. The Author(s).)
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- 2021
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14. Mobile phone use and social interactions among caregivers can reduce their ability to provide constant supervision to children at Australian public swimming pools.
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Wickens N, Wallace R, Dare J, Costello L, Lo J, and Nimmo L
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- Adult, Australia, Caregivers, Child, Female, Humans, Male, Social Interaction, Cell Phone Use, Swimming Pools
- Abstract
Issue Addressed: Caregivers have a crucial role to play in keeping children safe at public swimming pool facilities, with the most common factor contributing to childhood drowning being a lapse in adult supervision., Methods: A mixed methods approach was used to collect observations (n = 301) and interviews (n = 10) with caregivers of children aged 0-10 years at two public swimming pool facilities located in the Perth metropolitan area, Western Australia (WA)., Results: Of the 449 children observed, children aged 6-10 years were significantly less likely to be provided with ideal supervision (26%) compared to younger children aged 0-5 years (62%). Of the caregivers who were using their mobile phone while supervising children (n = 100, 22% of children observed), none provided ideal supervision. Overall supervision levels among caregivers differed with gender, with only 44% (n = 74) of female caregivers providing ideal supervision, compared to 72% (n = 96) of male caregivers. The 10 interviews revealed several themes, including the following: caregivers' perceptions of their supervision responsibilities; barriers to supervision; and awareness and perceptions of a communications campaign designed by the Royal Life Saving WA Branch, known as Watch Around Water (WAW)., Conclusion: Caregiver supervision at public swimming pools remains an important issue, particularly the use of mobile phones and its deleterious impact on supervision. The WAW program plays an integral role in educating caregivers of supervision responsibilities. Furthermore, this study adds to the limited evaluation of the WAW program, and thus will help guide future improvements to ensure caregiver supervision is consistent. SO WHAT?: Further research is needed to create strategies to reduce mobile phone use among caregivers, in order to provide safer swimming environments., (© 2020 Australian Health Promotion Association.)
- Published
- 2021
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15. Personality influences temporal discounting preferences: behavioral and brain evidence.
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Manning J, Hedden T, Wickens N, Whitfield-Gabrieli S, Prelec D, and Gabrieli JD
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- Adult, Anxiety Disorders, Brain Mapping, Female, Humans, Magnetic Resonance Imaging, Male, Neuropsychological Tests, Neuroticism, Reward, Young Adult, Brain physiology, Delay Discounting physiology, Personality
- Abstract
Personality traits are stable predictors of many life outcomes that are associated with important decisions that involve tradeoffs over time. Therefore, a fundamental question is how tradeoffs over time vary from person to person in relation to stable personality traits. We investigated the influence of personality, as measured by the Five-Factor Model, on time preferences and on neural activity engaged by intertemporal choice. During functional magnetic resonance imaging (fMRI), participants made choices between smaller-sooner and larger-later monetary rewards. For each participant, we estimated a constant-sensitivity discount function that dissociates impatience (devaluation of future consequences) from time sensitivity (consistency with rational, exponential discounting). Overall, higher neuroticism was associated with a relatively greater preference for immediate rewards and higher conscientiousness with a relatively greater preference for delayed rewards. Specifically, higher conscientiousness correlated positively with lower short-term impatience and more exponential time preferences, whereas higher neuroticism (lower emotional stability) correlated positively with higher short-term impatience and less exponential time preferences. Cognitive-control and reward brain regions were more activated when higher conscientiousness participants selected a smaller-sooner reward and, conversely, when higher neuroticism participants selected a larger-later reward. The greater activations that occurred when choosing rewards that contradicted personality predispositions may reflect the greater recruitment of mental resources needed to override those predispositions. These findings reveal that stable personality traits fundamentally influence how rewards are chosen over time., (Copyright © 2014 Elsevier Inc. All rights reserved.)
- Published
- 2014
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