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There is now a growing interest in early-life influences on adult diseases in China. A number of birth cohorts have been established. This systematic review provided a better understanding of the development of mother–baby cohorts in China. Systematic review. We conducted a systematic review for research or profile papers in English/Chinese that reported data from mother–baby cohorts in mainland China, with ≥1y follow-up after birth. We identified 315 papers, corresponding to 31 cohorts from 19 provinces/megacities. All cohorts started in 1999–2017 (21 after 2010) and were set up with broad objectives or specific scientific focus. The baseline sample size varied, from <500 to >300,000 mothers. A majority of cohorts were initiated during pregnancy and followed children to <10y, only six to adolescence and none into adulthood. These cohorts mostly collected samples from mothers and babies, in addition to using interviews/questionnaires to collect information about pregnancy, birth and child health. Most cohorts were recruited from a single province/city. The large western region was understudied. Mother–baby cohorts have developed rapidly in China, but usually with a short follow-up duration. Extending the follow-up of children and developing cross-cohort collaboration will increase the diversity, size and coverage of the sample, allow studying early influences on life-course health and identify targets for early intervention in the Chinese population. [ABSTRACT FROM AUTHOR]

• Children sleep less on days with longer daylight duration. • Sleeping longer improves selected general developmental, behavioural and health outcomes in children and adolescents. • Sleeping more increases children's BMI scores, mainly by increasing the risk of being overweight. • The results indicate a null or relatively small positive impact of sleeping longer on cognitive skills. Children and adolescents spend more than one-third of their time sleeping. Yet, we know little about the causal impact of sleeping on their development. This paper is the first to exploit variation in local daily daylight duration measured on pre-determined diary dates across the same individuals through time as an instrument in an individual fixed effects regression model to draw causal estimates of sleep duration on a comprehensive set of child development indicators. Applying this model to about 50 thousand time use diaries from two cohorts of Australian children spanning over 16 years, we first document that children sleep substantially less on days with longer daylight duration. Our results show that sleeping longer improves selected general developmental, behavioural and health outcomes in children and adolescents. By contrast, sleeping more statistically significantly increases the BMI scores, mainly by increasing the risk of being overweight. Moreover, while the impact of sleep duration on general and behavioural outcomes is more pronounced for females or older individuals, the effect on BMI is largely driven by males. The results indicate a null or relatively small positive impact of sleeping longer on cognitive skills. [ABSTRACT FROM AUTHOR]

Institutional child abuse has several negative impacts, including effects on mental health, well-being and interpersonal relationships. There is a need to understand this complex form of abuse occurring in an out-of-home setting. The current review aims to understand the literature base regarding the impact of institutional child abuse and to identify areas where further research is needed. Consequently, a systematic review was conducted, which captured quantitative and qualitative methods. This resulted in 58 papers being included. The papers captured the impacts of institutional abuse, covering physical abuse, sexual abuse, emotional abuse and neglect (i.e., a failure to be adequately cared for). These were then analysed using a qualitative methodology, specifically Reflexive Thematic Analysis. Several factors, such as prior abuse, were reported to exacerbate the impact of institutional abuse, whereas secure attachment was noted as a protective feature. Responses to disclosure appear to have an important role in recovery. Areas important for further research included understanding the role of protective factors and how they impact future outcomes, but to do so alongside an acknowledgement and greater exploration of negative impacts. • Diversity in impact is clearly evidenced, alongside complexity in presentation. • Pre-existing factors, including availability of protective factors, appear as important correlates with later mental health challenges. • A role for disclosure as a unique feature is indicated. • An absence of longitudinal research into impacts is evidenced. • The research field uses considerable diversity in method, with resulting varied quality. [ABSTRACT FROM AUTHOR]

Early childhood education programs have been found to effectively promote children's social and cognitive development. However, the health impact of these programs is less understood. Using a quasi-experiment of the first universal child care reform in China from 2010, this paper aims to identify whether the preschool reform produces any short-term effects on health-related outcomes of preschoolers (3-6 years old). Specifically, this reform expands access to affordable preschools that provide full-day center-based education, with school meals and essential health services on campus. I exploit the variation in the number of newly established preschools across provinces and implement difference-in-differences and triple-difference strategies. Results confirm the effectiveness of this reform by showing a strong and positive impact on preschool attendance. This paper then documents the benefits to alleviating underweight among preschoolers. Estimates show a larger effect in rural areas, suggesting that the reform narrows rural-urban disparities in education access and undernutrition prevention. I also explore the impact on caregivers' health consciousness and find improved health-seeking behavior when children get sick. [ABSTRACT FROM AUTHOR]

This paper investigates the nexus between women's empowerment and child health, in particular examining whether having more rights, and which rights, leads to improvements in the well-being of children, as reflected by child mortality rates. We distinguish between civil rights, political rights, and economic rights. In our sample of 134 countries over the period 1950–2018, and employing 27 separate rights-based measures of empowerment, women's empowerment commonly contributes to a reduction in child mortality in high-income countries, however, low- and middle-income countries reveal striking differences across some measures. For example, while women's participation in public administration or employment in the public sector is associated with reduced child mortality, the opposite is observed for the right to run a business and access to banking. Results suggest that strong institutions are needed to ensure rights are translated into better welfare. • Overarching study of rights-based measures of women's empowerment and their association with child mortality in 134 countries from 1950–2018. • Women's empowerment measures are commonly associated with a reduction in child mortality in high-income countries (HIC). • Association between women's empowerment and child health in low- and middle-income countries (LMIC) is less clearcut. • Women's participation in public sector and administration is associated with reduced child mortality in LMIC. • Results suggest strong institutions are needed to ensure rights are translated into better welfare. [ABSTRACT FROM AUTHOR]

This paper examines the influence of housing wealth on fertility outcomes through a regression discontinuity design based on a 2006 Chinese housing-market policy. Our analysis reveals that the positive impact of this policy on housing wealth significantly enhances the likelihood of fertility by 7.3 %. Our result implies that a 1 % increase in housing wealth can raise the fertility rate by 0.18 %. Furthermore, we observe that children born subsequent to the positive housing wealth shock exhibit improved health, not only at birth but also over the long term. Lastly, we present suggestive evidence suggesting that both parental pre-birth time allocation and parental health may help explain the documented positive effects of housing wealth on fertility rates. [ABSTRACT FROM AUTHOR]

Health as a common good is of paramount importance for the world, especially in developing countries. This paper contributes to the literature by analysing the effect of climate vulnerability on child health outcomes in a sample of 107 developing countries over the period 2000–2020. We also analyse the mediating role of women's political empowerment and women's education in the relationship between climate vulnerability and child health outcomes. Using the method of generalised moments in a two-stage system and linear regression absorbing several levels of fixed effects, we found robust evidence that climate vulnerability worsens child health outcomes. We also found that women's political empowerment (WPE) and women's education mitigate the negative effect of climate vulnerability on child health outcomes. These results remain robust against several alternative tests and therefore highlight the need to better examine how the health consequences of climate vulnerability are structured by gender in developing countries. Given the importance of women as agents of change, it would be more beneficial for policymakers to include them in the decision-making process. • We use a dataset covering 107 developing countries over 21 years. • Child health outcomes: IMR, NMR, under-5 mortality rate, and vaccination coverage. • Linear regression absorbing multi-levels of fixed effects, and S-GMM are used. • Climate vulnerability leads to worse child health outcomes. • WPE and female education mitigate the effects of vulnerability on child health. [ABSTRACT FROM AUTHOR]

Preference weights are widely used to score generic health states into utility indexes for estimation of quality adjusted life years (QALYs) and to aid health care funding decisions. To date, health state utilities are predominantly derived using stated preference methods based on decision utility. This paper tests an alternative and generates preference weights using experienced utility for children based on the Child Health Utility 9D (CHU9D) descriptive system. We estimate the relative values of the CHU9D health states with regard to experienced utility, where experienced utility is approximated by self-reported happiness. A nationally-representative longitudinal survey was used including 6090 Australian children aged 12–17 years surveyed over 2014–2018. The derived weights were then applied to calculate the utility decrements for a few common child health conditions. We found that the estimated utility decrements are largely similar to those estimated using the published CHU9D Australian adolescent weights based on decision utility, except for pain and depression. A smaller utility decrement for pain and a larger utility decrement for depression were indicated by experienced utility. We contribute to the literature by showing that using experienced utility methods to generate preference weights for health states is possible, and we discuss some important methodological challenges for future studies such as the impracticability of anchoring to 'dead' when utilizing experienced utility. • Established methods of valuing health states rely on decision utility. • We use experienced utility to generate preference weights for children. • The estimated decrements for health conditions are similar to published weights. • We see smaller impact for pain, larger for depression compared to published weights. • Feasibility is demonstrated using child experienced utility for preference weights. [ABSTRACT FROM AUTHOR]

Mobile apps for mental health and wellness (MH apps) have the potential to support youth mental health, expanding access to the large proportion of youth with mental health concerns who do not access formal treatment. Survey data suggest that young people are highly interested in MH apps, with minoritized youth (eg, LGBTQ individuals) and youth with elevated depressive symptoms reporting especially high rates of downloading MH apps.1 In addition, systematic reviews and meta-analyses suggest that MH apps can be effective.2 Although many popular MH apps do not have direct empirical evidence supporting their efficacy,3 they often include elements of empirically supported treatments for children and adolescents.4 The MH app space moves at a fast pace, making it difficult to stay up-to-date. More than 10,000 MH apps exist, with hundreds released each year.5 Even interested clinicians may, understandably, not have time to sort through the large number of apps, scientific papers, and app directories. Furthermore, these resources are rarely designed to offer clear, actionable advice for clinicians. Clinicians could benefit from information and guidance to help patients safely navigate MH apps and to best use MH apps in treatment. Here, we provide 3 key points about youth MH apps ("takeaways"), each with an actionable implication for clinicians ("action items"). We also provide examples of specific questions for clinicians to support their use of MH apps with children and adolescents (Table 1). More information regarding where we derived these recommendations is available in Supplement 1, available online. [ABSTRACT FROM AUTHOR]

Researchers and policymakers have identified adverse childhood experiences (ACEs) like abuse, neglect, and household dysfunction as a contributing factor to poor mental health outcomes for children. Positive childhood experiences (PCEs) like open family communication styles, having the ability to live and play in a safe, stable, and protective environment, having constructive opportunities for social engagement, and receiving mentorship from adults have been found to improve the mental health of children. This paper explores the role of ACEs and PCEs on the mental health outcomes of children. A sample of 22,628 children ages 6–17 from the National Survey of Children's Health (2017–2020) was used to explore the relationship between PCEs and ACEs and the mental health of children. Logistic regression analysis is used to model the effect of PCEs and ACEs on the odds of child mental health diagnoses. Findings indicate that with each additional ACE, there was a significant increase in the odds of reporting a MH condition (OR = 1.25, 95 % CI 1.09–1.43). Conversely, with each additional PCE, there is a significant decrease in the odds or reporting a MH condition (OR = 0.76, 95 % CI 0.68–0.84). There was also evidence that PCEs moderate the relationship between ACEs and reports of mental health conditions. When counts of ACEs are low, PCEs provide a protective effect on reports of mental health. But when the count of ACEs are high, children with higher numbers of PCEs have similar reports of mental health conditions. This study provides information about the moderating effect of PCEs on the relationship between ACEs and child mental health diagnosis with the goal of informing policies and interventions focused on ameliorating the growing crisis of children's negative mental health and well-being. Adverse childhood events (ACEs) like abuse, neglect and household dysfunction are known to negatively impact the mental health and well-being of children. Positive childhood experiences (PCEs), on the other hand, can positively influence the mental health and well-being of children. This study examines the association between adverse and positive childhood experiences to understand how they impact the mental health outcomes of children ages 6–17. Findings indicate that when ACEs are lower, the impact of PCEs are positive, but when ACEs are higher, PCEs do not make much difference in reports of mental health problems. [ABSTRACT FROM AUTHOR]

This paper explores the impact of school food policy from the perspective of school food workers to offer an alternative account of why school food may not be having the desired impact on child health or food choices. Drawing upon the findings from an institutional ethnography carried out in three UK primary schools, we argue that school food is being asked to perform an unrealistic task of luring children and families away from more unhealthy food options, without being given adequate resources or powers to do this job effectively. We theorise that the narrative depicting school food as a hero, combatting the harms of poor dietary choices and poor health outcomes, is inappropriate as a countermeasure to mitigate the effects of wider food industry forces. We revisit the narrative to consider the power imbalances within society that structure dietary choices, presenting our findings and the wider policy review in the form of a story about the evolution of school food set against a shifting food environment. We conclude with recommendations for policy makers who want to see school food have a greater impact in improving child health. • We report on an Institutional Ethnography of 3 UK schools to explore the issue of low meal uptake. • Semi-structured interviews with food workers, observations, and text analysis were used. • A significant barrier to meal uptake was an unfamiliarity with the healthy food offered in schools. • We discuss the evolution of the UK school meal service alongside changes in the wider food system. • We propose policy changes that would strengthen the protected food space offered by schools. [ABSTRACT FROM AUTHOR]