Investigating the association between Work Family Conflicts (WFC) and suicidal ideation in an Australian community-based cohort study.

BACKGROUND: Suicidal ideation, a significant public health issue, necessitates further investigation of its correlates and precursors. Extensive research highlights the association between Work Family Conflicts (WFC) and psychological distress, including depression. However, research examining the correlation between high WFC experiences and suicidal ideation is sparse. This study explores the association between WFC and suicidal ideation within an occupation non-specific community sample. METHODS: Community-based, representative data from the Australian-based Personality and Total Health (PATH) Through Life project formed the basis of this study. Participants eligible for the study (N = 1312) were employed either full-time or part-time and took part in an online questionnaire. Importantly, the data include robust measures of WFC, active suicidal ideation, and depression. RESULTS: After adjusting for psychosocial job characteristics, history of suicidal ideation, and other socio-demographic factors, high WFC was associated with increased odds of active suicidal ideation (Model 4: OR: 1.58, CI: 1.04-2.40). Further, supplementary analyses indicated that depression is an important component of this relationship. Analyses exploring an interaction effect by gender showed that while a significant association between high WFC and suicidality was observed among men after adjustment for all covariates, this association was not evident for women. LIMITATIONS: A small number of participants reported suicidal ideation, potentially affecting the statistical power to detect significant effects. WFC was measured at one time-point, prohibiting the exploration of its causal and/or chronic impact on suicidal ideation. CONCLUSION: We find evidence that high WFC is linked to increased active suicidal ideation - specifically for men.

Investigating the association between work family conflict (WFC) and generalized anxiety disorder (GAD) in an Australian community-based cohort study.

PURPOSE: Difficulties managing work and family demands are common and have been found to be associated with stress and poor mental health. However, very few studies have examined Work Family Conflict (WFC) in connection with diagnosable anxiety disorders (and none with Australian representative data). The current study investigated whether high WFC was significantly associated with a diagnosis of Generalised Anxiety Disorder (GAD) after controlling for a broad range of socio-demographic contextual factors, related psychosocial job, family and individual characteristics, and prior anxiety symptom history. METHODS: Data was analysed from an Australian population-based community cohort - the Personality and Total Health (PATH) Through Life project. Eligible participants (N = 1159) were employed full-time or part-time, with data collected by both online questionnaire and face-to-face interview. Presence of Generalised Anxiety Disorder (GAD) in the past 12-months was diagnosed by the GAD module in the Composite International Diagnostic Interview (CIDI) (based on DSM-IV criteria) and severe anxiety symptoms were measured using the Patient Health Questionnaire (PHQ) 7-item 'other anxiety' model. RESULTS: The findings consistently showed that those experiencing high WFC had higher odds of a GAD diagnosis (final adjusted model: CIDI: OR: 2.55, CI: 1.38-4.70) as well as clinical levels of anxiety symptoms (PHQ: OR:2.61, CI:1.44,4.72). This was the case after controlling for an extensive range of covariates. CONCLUSIONS: This is one of the first studies to show that WFC is associated with greater likelihood of GAD. The challenge of juggling both work and family can have far-reaching impacts - not just increasing distress broadly, but also potentially increasing the likelihood of clinically diagnosable anxiety.

Unencumbered and still unequal? Work hour - Health tipping points and gender inequality among older, employed Australian couples.

Could working into older age offer women an opportunity to 'catch up' their careers and redress their financial disadvantage in retirement? This is a period of relative 'unencumbrance' from childrearing, potentially freeing women's time for more paid work. Here, we examine whether women aged 50 to 70 are able to increase their workhours, and what happens to their mental health, vitality and wealth. We used a representative household-based panel of employed older Australians (the HILDA survey). The longitudinal bootstrapped 3SLS estimation technique adjusted for reciprocal relationships between wages, workhours, and health, modelled in the context of domestic work time. We found that, relative to their same-aged male counterparts, older women spent 10 h more each week on domestic work, and 9 h less on work that earned income. When women sought to add more paid hours on top of their unpaid hours, their mental health and vitality were impaired. Men were typically able to maintain their workhours and health advantage by spending fewer hours each week on domestic work. Unable to work longer without trading-off their health, and paid less per hour if they did so, our analysis questions whether working into older age offers women a road out of inequality and disadvantage.

Reciprocal relationships between time pressure and mental or physical health in Australian mothers of preschool aged children.

The associations between time pressure and health are typically conceptualised and examined as unidirectional. This study examined the reciprocal relationships between time pressure and mental and physical health amongst working mothers of preschool children; a high-risk group for feeling time pressured. Using 5 waves of a panel study of Australian mothers when their children were aged 0-4 (n = 3878) and cross-lagged structural equation models, we find strong significant negative reciprocal associations between time pressure and mental and physical health, although these reciprocal associations were stronger and more consistent over time for mental health. Our results indicate that physical health takes a couple of years to deteriorate to a point where the reciprocal effects with time pressure become apparent, but for mental health the reciprocal effects are immediate, present at all time points and consistently strong. Findings suggest there are significant reciprocal health consequences of the time pressure experienced by working mothers and government policy encouraging mothers back into the workforce without adequate supports may be harmful for health.

Workforce participation, health and wealth inequality among older Australians between 2001 and 2015.

BACKGROUND: Australians born in 2012 can expect to live about 33 years longer than those born 100 years earlier. However, only seven of these additional years are spent in the workforce. Longer life expectancy has driven policies to extend working life and increase retirement age; the current Australian policy, which has increased the eligibility for the pension from 65 to 67 by 2023, assumes that an improvement in longevity corresponds with an improvement in healthy life expectancy. However, there is mixed evidence of health trends in Australia over the past two decades. Although some health outcomes are improving among older age groups, many are either stable or deteriorating. This raises a question of how health trends intersect with policy for older Australians aged from 50 to 70. This paper considers the interplay between older workers' health and workforce participation rates over the past 15 years when extended workforce participation has been actively encouraged. METHODS: We compared health and economic outcomes of the older people in following years with the base year (start of the study period), adjusting for some key socio-economic characteristics such as age, sex, ethnicity, education and equivalized household income by applying the Random effects estimator with maximum likelihood estimation technique. RESULTS: We find that regardless of increasing longevity, the health of older adults aged between 50 and 70 has slightly deteriorated. In addition, health gaps between those who were working into their older age and those who were not have widened over the 15-year period. Finally, we find that widening health gaps linked to workforce participation are also accompanied by rising economic inequality in incomes, financial assets and superannuation. With the exception of a small group of healthy and very wealthy retirees, the majority of the older Australians who were not working had low incomes, assets, superannuation, and poor health. CONCLUSIONS: The widening economic and health gap within older population over time indicates a clear and urgent need to add policy actions on income and health, to those that seek to increase workforce participation among older adults.

Time for Physical Activity: Different, Unequal, Gendered.

We investigate time inequity as an explanatory mechanism for gendered physical activity disparity. Our mixed-effect generalized linear model with two-stage residual inclusion framework uses longitudinal data, capturing differing exchanges and trade-offs in time resources. The first stage estimates within-household exchanges of paid and family work hours. Estimates show that men's employment increases women's family work hours while reducing their own, whereas women's employment weakly affects men's family time. Incorporating unequal household exchange into the second stage reveals that as women's paid or family work hours increase, physical activity goes down. In contrast, men's physical activity is unaffected by paid work hours, and family time appears protective. Control over work time further underscores gendered time exchange: Men's activity increases with own or partner's control, whereas women's increases only with their own. Our approach reveals how men's and women's unequal capability to use time creates differing trade-offs between work, family, and physical activity, generating health inequity.

Adjusting tertiary mental health education during Covid-19: an Australian experience.

Globally, tertiary education has been greatly affected by the Covid-19 crisis. In this essay we explore the impact of the pandemic on this educational sector in an Australian setting; specifically, we discuss how the Research School of Population Health at the Australian National University adjusted and adapted to the changing circumstances arising from the pandemic. In this respect, two adjustments (both described in detail in the text) in the way mental health education was delivered at the School were proposed to mitigate the impact of Covid-19 and enhance the university's capacity to provide quality public health education to students. Thus, this essay shows that it is possible to design educational interventions that surmount the challenges posed by the pandemic. In addition, educators may use the examples cited in this paper to guide them to respond appropriately to the challenges that have arisen in terms of health education due to Covid-19.

How does working nonstandard hours impact psychological resources important for parental functioning? Evidence from an Australian longitudinal cohort study.

This study investigates the link between nonstandard schedules and three psychological resources salient to working parents' parental functioning (psychological distress, work-family conflict and relationship quality). Data from fathers and mothers are analysed separately, using a nationally representative sample of dual-earner parents (6190 observations from 1915 couples) drawn from the Longitudinal Study of Australian Children (LSAC). The LSAC data was collected between 2008 and 2018 (with data collected every two years). Hybrid analysis models were conducted to identify within-person changes in these psychological resources in association with moving in and out of nonstandard work schedules, as well as between-person differences between parents working standard hours and nonstandard hours. The results indicate that the connections between working nonstandard schedules and the psychological resources were patterned differently across genders. No significant differences in psychological distress were found between those working nonstandard schedules and those working standard schedules for either fathers or mothers. Fathers working nonstandard schedules had higher work-family conflict compared to fathers working standard schedules, while no such effect found for mothers. This effect for fathers was largely explained by other characteristics related to working a nonstandard schedule, rather than the schedule itself. For fathers (but not mothers), working nonstandard schedules was significantly, and potentially causally, associated with lower relationship quality (i.e. within-person effects were found). Additional supplementary analyses found the connections between work schedules and psychological resources varied somewhat across different types of schedules (i.e. evening/night shift, rotating shift and irregular shift). As one of the first nationally representative longitudinal studies to explore changes in work schedules in association with changes in parents' psychosocial resources, the impacts for fathers (particularly relationship quality) are an important line for future enquiry.

Does psychological distress directly increase risk of incident cardiovascular disease? Evidence from a prospective cohort study using a longer-term measure of distress.

OBJECTIVE: Cardiovascular disease (CVD) incidence is elevated among people with psychological distress. However, whether the relationship is causal is unclear, partly due to methodological limitations, including limited evidence relating to longer-term rather than single time-point measures of distress. We compared CVD relative risks for psychological distress using single time-point and multi-time-point assessments using data from a large-scale cohort study. DESIGN: We used questionnaire data, with data collection at two time-points (time 1: between 2006 and 2009; time 2: between 2010 and 2015), from CVD-free and cancer-free 45 and Up Study participants, linked to hospitalisation and death records. The follow-up period began at time 2 and ended on 30 November 2017. Psychological distress was measured at both time-points using Kessler 10 (K10), allowing assessment of single time-point (at time 2: high (K10 score: 22-50) vs low (K10 score: <12)) and multi-time-point (high distress (K10 score: 22-50) at both time-points vs low distress (K10 score: <12) at both time-points) measures of distress. Cox regression quantified the association between distress and major CVD, with and without adjustment for sociodemographic and health-related characteristics, including functional limitations. RESULTS: Among 83 906 respondents, 7350 CVD events occurred over 410 719 follow-up person-years (rate: 17.9 per 1000 person-years). Age-adjusted and sex-adjusted rates of major CVD were elevated by 50%-60% among those with high versus low distress for both the multi-time-point (HR=1.63, 95% CI 1.40 to 1.90) and single time-point (HR=1.53, 95% CI 1.39 to 1.69) assessments. HRs for both measures of distress attenuated with adjustment for sociodemographic and health-related characteristics, and there was little evidence of an association when functional limitations were taken into account (multi-time-point HR=1.09, 95% CI 0.93 to 1.27; single time-point HR=1.14, 95% CI 1.02 to 1.26). CONCLUSION: Irrespective of whether a single time-point or multi-time-point measure is used, the distress-CVD relationship is substantively explained by sociodemographic characteristics and pre-existing physical health-related factors.

Australian parents' work-family conflict: accumulated effects on children's family environment and mental health.

PURPOSE: Many parents struggle to balance their work and family responsibilities. Yet, little research in the field of social psychiatry has explored the emergence of work-family conflict (WFC) as an important social determinant of mental health, particularly for children. The current study used longitudinal Australian population-based data to investigate the impact of parents' accumulated experiences of work-family conflict on children's mental health. Levels of parent psychological distress, marital satisfaction and parenting irritability were examined as potential explanatory factors within the family environment. METHODS: The study used five waves of data from the Australian Longitudinal Study of Australian Children (LSAC), a representative community sample of Australian children and their parents. Analyses were restricted to coupled, employed mothers (1903) and fathers (1584) who reported their WFC levels in all five waves. Structural Equation Modelling (SEM) was used to examine the association between accumulated experiences of work-family conflict across all time-points (AWFC) and children's mental health at wave 5. Family environment factors were assessed as possible explanatory mediators. RESULTS: There was a significant association between AWFC and children's mental health at wave 5. Parent psychological distress, marital satisfaction and parenting irritability were all found to significantly explain this association (accounting for 66% of the total effect). CONCLUSIONS: Children whose parents have ongoing or accumulated difficulties managing their work and family responsibilities are more likely to have poorer mental health. This has important implications for family-friendly work arrangements and demonstrates the need to further understand the intergenerational impacts of parents' jobs on their children's psychological wellbeing.

Advancing a health equity agenda across multiple policy domains: a qualitative policy analysis of social, trade and welfare policy.

OBJECTIVE: While there is urgent need for policymaking that prioritises health equity, successful strategies for advancing such an agenda across multiple policy sectors are not well known. This study aims to address this gap by identifying successful strategies to advance a health equity agenda across multiple policy domains. DESIGN: We conducted in-depth qualitative case studies in three important social determinants of health equity in Australia: employment and social policy (Paid Parental Leave); macroeconomics and trade policy (the Trans Pacific Partnership agreement); and welfare reform (the Northern Territory Emergency Response). The analysis triangulated multiple data sources included 71 semistructured interviews, document analysis and drew on political science theories related to interests, ideas and institutions. RESULTS: Within and across case studies we observed three key strategies used by policy actors to advance a health equity agenda, with differing levels of success. The first was the use of multiple policy frames to appeal to a wide range of actors beyond health. The second was the formation of broad coalitions beyond the health sector, in particular networking with non-traditional policy allies. The third was the use of strategic forum shopping by policy actors to move the debate into more popular policy forums that were not health focused. CONCLUSIONS: This analysis provides nuanced strategies for agenda-setting for health equity and points to the need for multiple persuasive issue frames, coalitions with unusual bedfellows, and shopping around for supportive institutions outside the traditional health domain. Use of these nuanced strategies could generate greater ideational, actor and institutional support for prioritising health equity and thus could lead to improved health outcomes.

Bringing in critical frameworks to investigate agenda-setting for the social determinants of health: Lessons from a multiple framework analysis.

Public health scholars have increasingly called for greater attention to the political and policy processes that enable or constrain successful prioritisation of health on government agendas. Much research investigating policy agenda-setting in public health has focused on the use of single frameworks, in particular Kingdon's Multiple Streams Framework. More recently, scholars have argued that blending complementary policy frameworks can enable greater attention to a wider range of drivers that influence government agendas away from or towards progressive social and health policies. In this paper, we draw on multiple policy process frameworks in a study of agenda-setting for Australia's first national paid parental leave scheme. Introduced in 2011 after decades of advocacy, this scheme provides federal government-funded parental leave for eighteen weeks' pay at the minimum wage for primary caregivers, with evaluations showing improved health and equity outcomes. Drawing on empirical data collected from documentary sources and interviews with 25 key policy informants, we find that a combination of policy frameworks; in this case, Kingdon's Multiple Streams; Advocacy Coalition Framework; Punctuated Equilibrium; Narrative Policy Framework; and Policy Feedback helped explain how this landmark social policy came about. However, none of these frameworks were adequate without situating them within a critical feminist lens which enabled an explicit focus on the gendered nature of power. We argue that, alongside making use of policy process frameworks, social determinants of health policy research needs to engage with critical frameworks which share an explicit agenda for improving people's daily living conditions and the re-distribution of power, money, and resources in ways that promote health equity.

Cost of poor health to the labour market returns to education in Australia: another pathway for socio-economic inequality.

While several studies have estimated returns to education in Australia, there is limited evidence regarding the influence of health on the returns. This paper identifies how health affects returns to education in the labour market using the Heckman selection bias-corrected model. We measured health status using a self-rated health item with five response categories 'poor, fair, good, very good, and excellent'. The findings show that poor health or being unhealthy (defined as 'poor' or 'fair') interacts with education, such that the benefits of education (i.e. higher hourly wage rate) are curtailed in those with health problems; the adverse effect is stronger for those in lower skilled jobs. The estimated returns to an additional year of schooling on average over 2001-2017 is 7.43% and 6.88% for the healthy and unhealthy groups, respectively. Thus, the return for workers with poor health is 7.4% lower than the return for healthier workers (for each additional year of schooling). This gap in the returns is equivalent to a productivity loss of about $19-25 billion per year. The lower returns to education for workers with poor health likely results from lower productivity while at work rather than loss of working days as the estimate is based on an hourly wage rate (rather than days or hours absent from work). These lower returns may also be explained by unhealthy workers accepting lower paid jobs given the same levels of experience, skills and education that healthier counterparts have. The cost of poor health to labour market returns is further amplified in low-skilled occupations, a process which is likely to exacerbate socio-economic inequalities and undercut social mobility.

Earning to learn: the time-health trade-offs of employed Australian undergraduate students.

Australian undergraduate students are facing difficult economic circumstances and rates of psychological distress are well above the general population. Many are combining their study with paid work to manage financially. There is, however, little to no research on the relationship between economic pressures, academic demands and health (mental and physical) among these young adults. This study used a mixed-methods approach, combining semi-structured interviews with health measures to investigate the interactions and interconnections between work, study and health among 22 Australian undergraduate students. Thematic data analysis concentrated on the effect of time constraints on health, due to the financial and academic demands of contemporary undergraduate life. We found that students felt time-pressured, and commonly sacrificed sleep, nutrition, exercise and lecture attendance as a way of managing employment demands. These strategies contributed to poor health; we observed very high rates of psychological distress, poor sleep, diet and exercise, peaking during exams. Our in-depth study illustrates the challenges facing the current generation of undergraduate students in Australia, raising their study-work conflict as a genuine public health and social equity issue.

How can multiple frames enable action on social determinants? Lessons from Australia's paid parental leave.

How do public health advocates and practitioners encourage policy actors to address the social determinants of health? What strategies can be used to elevate healthy social policies onto government agendas? In this paper, we examine the case of Australia's first national paid parental leave scheme, announced in 2009 after decades of policy advocacy. This scheme provides job-protected leave and government-funded pay at the minimum wage for 18 weeks for eligible primary care givers on the birth of an infant, and has been shown to reduce health inequities. Drawing on documentary sources and interviews (n = 25) with key policy actors, this paper traces the evolution of this landmark social policy in Australia, focusing on the role of actors, institutions and policy framings in setting the policy agenda. We find that advocates strategically deployed three different framings-for economy, gender equality and health-to drive paid parental leave onto the Government's agenda. They navigated barriers linked to power, gender ideology and cost, shifting tactics along the way by adopting different frames in various institutional settings and broadening their coalitions. Health arguments varied in different institutional settings and, at times, advocates selectively argued the economic or gender equality framing over health. The case illustrates the successful use of strategic pragmatism to provoke action, and raises broader lessons for advancing action on the social determinants of health. In particular, the case highlights the importance of adopting multiple synergistic policy framings to draw support from non-traditional allies and building coalitions to secure public policy change.

Feeding the Australian family: challenges for mothers, nutrition and equity.

Australian women shoulder the bulk of household duties including family food provisioning, despite increasing participation in the workforce. This research aimed to understand employed mothers' daily-lived experience of family food provisioning, in particular, the intersection between family food provisioning, gender inequality and nutritional guidelines as they impact women's time and health. Semi-structured interviews were conducted with 22 employed mothers in South Australia. Participants had at least one child aged less than 13 years. Qualitative data was analysed using a thematic content approach. Time-scarcity was common and associated with stress in relation to family food provisioning; this relationship was particularly apparent among employed mothers who were also studying. Most mothers valued nutrition and strove to provide nutritious meals, although they tended to work from their own nutritional understandings, not the national nutrition guidelines; they saw the nutrition guidelines as unhelpful because of the time demands that were implied. The study invites policy makers, practitioners and researchers to consider time for family food provisioning as a social determinant of family as well as women's health, and structural strategies to address this health inequity for women.

Flexible employment policies, temporal control and health promoting practices: A qualitative study in two Australian worksites.

For four decades, theories of job demand-control have proposed that higher occupational status groups have lower health risks due to the stress accompanying jobs featuring high demands but high control. This research examines whether Flexible Work Arrangements (FWAs) can improve the health prospects of a range of workers by giving greater control over work time arrangements. Our setting is Australia, where FWAs were introduced in 2009. In line with these early studies alongside studies of work-life balance, we expected to observe that workers with access to control over daily work times could better control the activities outside of work that influence chronic disease. Using a practice sociology approach, we compared the accounts of twenty-eight workers in blue and white collar industries with differing degrees of work time flexibility. The findings do not contradict early theories describing occupational differences of job demand-control dynamics and their relationship to health risks. However, this study suggests that a) time demands and strains have increased for a broad sweep of workers since the 1980s, b) the greater control of higher occupational status groups has been eroded by the high performance movement, which has attracted less scrutiny than FWAs, and c) more workers are forced to adapt their daily lives, including their approach to health, to accommodate their job demands. Job insecurity further impedes preventative health practices adoption. What might appear to be worker-controlled flexibility can-under the pressures of job insecurity and performance expectations without time limits-transform into health-eroding unpredictability. The answer however is not greater flexibility in the absence of limits on the well-documented precursors of work stress: long hours, job insecurity and intensity-related exhaustion. While there have been welcome developments in job demand-control-health conceptualizations, they typically ignore the out-of-work temporal demands that workers face and which compound on-the-job demands. Redesign of the temporalities of working life within worksites need to be accompanied by society-level policies which address caring responsibilities, gender equality as well as broad labour market conditions.

BMI trajectories and risk factors among 2-11-year-old children by their immigrant status: evidence from the Longitudinal Study of Australian Children.

OBJECTIVE: This study aimed to identify body mass index (BMI) trajectories and their predictors in Australian children by their maternal immigrant status. METHODS: Data on 4142 children aged 2-3 years were drawn from the birth cohort of the Longitudinal Study of Australian Children. BMI was calculated according to the International Obesity Task Force cut-off points. Immigrant status was determined by the Australian Bureau of Statistics and the United Nations Development Programme, Human Development Index criteria. Latent class growth analysis estimated distinct BMI trajectories, and multinomial logistic regression analysis examined factors associated with these BMI trajectories. RESULTS: Two BMI groups and six BMI trajectories were identified. The stable trajectories group included high-risk (10%, n=375), moderate-risk (5%, n=215) and low-risk (68%, n=2861) BMI trajectories. The changing trajectories group included delayed-risk (6%, n=234), gradual-risk (8%, n=314) and declining-risk (3%, n=143) BMI trajectories. We found some evidence that children of immigrants from low-and middle-income countries were more likely to have moderate-risk and high-risk BMI trajectories compared with low-risk BMI trajectory. However, these associations were insignificant in fully adjusted models. The explanatory risk factors for moderate-risk and high-risk BMI trajectory were birth weight, family socioeconomic position, and organised sports participation. Our results also suggest that 4-7 years of age may be important for the prevention of overweight/obesity in children. DISCUSSION: A better understanding of the risk factors associated with distinct BMI trajectories in immigrant children will inform effective preventive strategies. Some of these risk factors such as non-participation in organised sports, and high screen time, may also impede the integration of immigrant children into the host culture. Obesity prevention strategies aimed at increasing physical activities in immigrant children could help deliver a social and health benefit by increasing social integration among children of immigrants and Australians.

Long work hours of mothers and fathers are linked to increased risk for overweight and obesity among preschool children: longitudinal evidence from Germany.

BACKGROUND: Most existing studies on maternal employment and childhood overweight/obesity are from the USA. They are predominantly cross-sectional and show a consistent linear association between the two. Less is known about the joint impact of fathers' and mothers' work hours on childhood overweight and obesity. OBJECTIVES: To examine the impact of maternal and paternal work hours on overweight/obesity among children aged 1-6 years in Germany using longitudinal data. METHODS: Child body weight and height and their parents' work hours were collected for 2413 children at ages 0-1, ages 2-3 and ages 5-6. Overweight and obesity was defined using the body mass index percentiles based on the Cole LMS-Method. Random effects model was conducted, adjusting for demographic, socioeconomic and health characteristics of parents and children. RESULTS: Compared with non-employment, when mothers worked 35 or more hours per week, the risk for child overweight and obesity increased among preschool children. When fathers worked 55 or more hours per week, this effect was strengthened and maternal part-time hours (24-34 per week) also became a risk for child overweight and obesity. The effect was mainly found in high-income families. CONCLUSIONS: Both mothers' and fathers' long work hours matter to young children's overweight status. Employment protection and work time regulation for both working parents during the first 6 years of the child's life should be considered in future policy.

Shift work and mental health: a systematic review and meta-analysis.

BACKGROUND: Shift work is common. However, research findings are mixed regarding the impact of shift work on mental health. This systematic review sought to provide a comprehensive summary of existing research examining the association between different types of shift work and mental health. The review included large-scale, non-occupation-specific research. METHODS: Four electronic databases PubMed, PsycINFO, Web of Science and SCOPUS were searched to identify studies that reported on the statistical association between shift work and mental health and that used population-based samples. Two reviewers extracted information about study characteristics and data on the association between shift work and mental health. A meta-analysis was performed for longitudinal studies adopting a 'broad binary' measure of shift work. RESULTS: Thirty-three studies were included in the final review-10 cross-sectional studies, 22 longitudinal studies, and 1 study that included both. Findings were grouped based on whether the measure of shift work focussed on: (1) night/evening work, (2) weekend work, (3) irregular/unpredictable work schedule, or (4) a broad binary measure. There was a reasonable level of evidence that overall, when a broad binary measure was adopted, shift work was associated with poorer mental health-this finding was supported by the meta-analysis results. There was also some evidence that irregular/unpredictable work was associated with poorer mental health. There was less evidence for night/evening and minimal evidence for weekend work. Inconsistencies in study methodology, limited contrasting and combining the results. CONCLUSIONS: The association between shift work and mental health is different across types of shift work. The evidence is strongest for a broad binary, general measure of shift work and for irregular or unpredictable shift work. There is a need for continued research that adopts consistent and clear measures of shift work.