The mediating role of visceral adiposity in the relationship among schooling, physical inactivity, and unhealthy metabolic phenotype.

OBJECTIVE: To explore the mediating role of visceral adiposity, as assessed by the visceral adiposity index (VAI), in the relationship among schooling, physical inactivity, and unhealthy metabolic phenotype (UMP). METHODS: A cross-sectional population-based study was conducted with 854 adult individuals of both sexes from a Brazilian city. Data were collected through interviews, anthropometric evaluation, and clinical and laboratorial tests. We used multivariate path analysis, which simultaneously analyzes multiple relationships between variables. The analyses were adjusted by sex and age and stratified according to nutritional status. RESULTS: A positive direct effect of visceral adiposity on the UMP was observed for normal weight, standardized estimate (SE) = 0.632; confidence interval (CI 95%) = 0.547, 0.707) and overweight individuals (SE = 0.732; CI 95% = 0.647, 0.808), and negative direct effect of schooling on physical inactivity (normal weight: SE = -0.408; CI 95% = -0.550, -0.265) and overweight (SE = -0.304; CI 95% = -0.479, -0.129). Among normal-weight individuals, there was a positive direct effect (SE = 0.193; CI 95% = 0.059, 0.328) of physical inactivity on VAI. In relation to indirect effects, there was a mediating role of visceral adiposity in the association of schooling level and physical inactivity with the UMP only among normal-weight individuals. CONCLUSIONS: Visceral adiposity has a direct effect on the UMP regardless of nutritional status, and there is a mediating effect of VAI on the relationship among schooling, physical inactivity, and UMP in normal-weight individuals.

Time of exposure to night work and carotid atherosclerosis: a structural equation modeling approach using baseline data from ELSA-Brasil.

PURPOSE: The study of cardiovascular diseases (CVD) associated with night work is difficult due to the long period required for conditions to manifest and the healthy-worker effect. Analyzing asymptomatic pre-clinical changes in the atherosclerotic process is a way to assess the pathways between exposure to night work and CVD. AIM: To evaluate the associations between night work and subclinical atherosclerosis measured by carotid intima-media thickness (CIMT) using baseline data from the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). METHODS: We conducted cross-sectional analyses using baseline data (2008-2010) from 9785 civil servants, aged 35-74 years. The associations between time of exposure to night work and mean CIMT were examined using a structural equation model. RESULTS: The sample included 4259 men and 5526 women, mean age of 51.6 years. A total of 1778 (18.2%) individuals were exposed to night work (594 current and 1184 former night workers), and the mean years of night work exposed was 11.47 (SD = 9.45) years. On average, mean CIMT was 0.606 (SD = 0.130) mm. Among men, the increase in exposure to night work was significantly associated with an increase in BMI and CIMT. Among women, night work was not associated with increased CIMT. In relation to the indirect associations, results suggest a possible mediation by BMI, diabetes and hypertension on the association between the years of night work and mean CIMT only among men. CONCLUSION: Night work was associated with increased CIMT only among men. These findings add to the knowledge of the possible pathways that link night work and carotid atherosclerosis. Additionally, these results contribute to the recognition of work schedules as a public health problem that should be addressed by the medical community and policy makers.

Years worked at night and body mass index among registered nurses from eighteen public hospitals in Rio de Janeiro, Brazil.

BACKGROUND: Employees working night shifts are at a greater risk of being overweight or obese. Few studies on obesity and weight gain analyze the years of exposure to night work. The aim of this study was to determine the relationship between the years of exposure to night work and body mass index (BMI) among registered nurses. METHODS: A cross-sectional analysis was performed in 18 largest public hospitals in Rio de Janeiro, Brazil. A total of 2,372 registered nurses (2,100 women) completed a comprehensive questionnaire concerning sociodemographic, professional, lifestyle, and health behavioral data. Current and past exposures to night shifts as well as BMI values were measured as continuous variables. A gamma regression model was used with an identity link function to establish the association. RESULTS: The association between years of exposure to night work and BMI was statistically significant for both women and men after adjusting for all covariates [ß = 0.036; CI95% = 0.009-0.063) and ß = 0.071 (CI95% = 0.012-0.129), respectively]. The effect of night work was greater among men than women. For example, for those women who have worked at night for 20 years the estimated average BMI was 25.6 kg/m2 [range, 25.0-26.2]. In relation to men, after 20 years of exposure to night work the estimated average BMI was 26.9 kg/m2 [range, 25.6-28.1]. CONCLUSIONS: These findings suggest that night shift exposure is related to BMI increases. Obesity prevention strategies should incorporate improvements in work environments, such as the provision of proper meals to night workers, in addition to educational programs on the health effects of night work.

Mental health and poor recovery in female nursing workers: a contribution to the study of gender inequities.

OBJECTIVE: To address the association between work and mental health from a gender perspective by investigating the combination of domestic work and adverse aspects of professional work (night shifts and psychosocial stress) with regard to minor psychiatric disorders (MPD) and poor recovery from work. METHODS: A cross-sectional study was carried out at three public hospitals in Rio de Janeiro, Brazil, in 2006 (n = 1 122). Data collection was based on a census of all female nurses, technicians, and auxiliary nurses. A multidimensional instrument containing information about health, professional work, and the domestic work was used. The domestic work hours (longer or shorter than 10 hours per week) were combined with the work schedule (day or night shifts) and with psychosocial stress (absence or presence of effort-reward imbalance [ERI]). These combinations were tested with regard to the association with MPD and poor recovery from work. The adjusted odds ratios (OR) and their confidence intervals were calculated using multiple regression models. RESULTS: The combination of long domestic work hours with night work was significantly associated with MPD (OR = 1.94) and poor recovery (OR = 2.67). Long domestic work hours combined with the presence of ERI resulted in significantly higher odds ratios (OR = 4.37 and OR = 5.53, respectively). In all analyses, greater odds ratios were observed in groups with long domestic work hours, compared to short work hours. CONCLUSIONS: These findings suggest that carrying out domestic activities over a certain number of hours can increase the detrimental consequences of professional work in regard to MPD and poor recovery. The interaction between professional and domestic work and its potential implications to mental suffering must be considered in discussions on health equity.

[Is socioeconomic residential segregation associated with sleep problems? Insights from ELSA-Brasil]. / A segregação residencial socioeconômica está associada aos problemas do sono? Insights do ELSA-Brasil.

Several factors influence sleep, which is essential for health. While the role of neighborhood socioeconomic context on sleep health has been studied in recent years, results are inconsistent. The study aimed to investigate the association between socioeconomic residential segregation and sleep problems, using data from the second evaluation (2012-2014) of 9,918 public servants participating in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). Socioeconomic residential segregation was assessed using the Getis-Ord Local Gi* statistic. Sleep duration and deprivation, complaints of insomnia, and daytime sleepiness were obtained through interviews. Binomial and multinomial logistic regression models were used to estimate the odds ratio (OR). Regarding sleep, 49% had short duration and 3% long duration, 23% reported complaints of insomnia, 45% sleep deprivation, 42% daytime sleepiness, and 48% reported ≥ 2 sleep problems. In the model adjusted for demographic and socioeconomic variables, there was an association between high socioeconomic residential segregation and short sleep duration (OR = 1.22; 95%CI: 1.07; 1.40), sleep deprivation (OR = 1.20; 95%CI: 1.05; 1.37), daytime sleepiness (OR = 1.17; 95%CI: 1.03; 1.34) and ≥ 2 associated sleep problems (OR = 1.24; 95%CI: 1.08; 1.41). Individuals living in neighborhoods with high socioeconomic residential segregation are more likely to have short sleep duration, sleep deprivation, daytime sleepiness, and ≥ 2 associated sleep problems. This information reinforces that public policy measures to reduce socioeconomic inequalities can improve the population's sleep health.

O sono é influenciado por diversos fatores e é essencial para a saúde. O papel do contexto socioeconômico da vizinhança na saúde do sono foi estudado nos últimos anos, mas os resultados são inconsistentes. O objetivo deste estudo foi investigar a associação entre a segregação residencial socioeconômica e os problemas do sono. Utilizou-se dados da 2ª avaliação (2012-2014) de 9.918 servidores públicos participantes do Estudo Longitudinal de Saúde do Adulto (ELSA-Brasil). A segregação residencial socioeconômica foi avaliada por meio da estatística Getis-Ord Local Gi*, e a duração e privação do sono, as queixas de insônia e a sonolência diurna foram obtidas por meio de entrevistas. Para as estimativas da odds ratio (OR), foram utilizados modelos de regressão logística binomial e multinomial. Em relação ao sono, 49% tinham curta duração e 3% longa duração, 23% relataram queixas de insônia, 45% relataram privação do sono, 42% relataram sonolência diurna e 48% relataram ≥ 2 problemas do sono. No modelo ajustado por variáveis demográficas e socioeconômicas, houve associação entre alta segregação residencial socioeconômica e duração curta do sono (OR = 1,22; IC95%: 1,07; 1,40), privação do sono (OR = 1,20; IC95%: 1,05; 1,37), sonolência diurna (OR = 1,17; IC95%: 1,03; 1,34) e ≥ 2 problemas associados do sono (OR = 1,24; IC95%: 1,08; 1,41). Indivíduos que vivem em vizinhanças com alta segregação residencial socioeconômica apresentam maior chance de terem curta duração, privação do sono, sonolência diurna e ≥ 2 problemas associados ao sono. Essas informações reforçam que políticas públicas para reduzir as desigualdades socioeconômicas podem contribuir para melhorar a saúde do sono da população.

El sueño se influye por varios factores y es esencial para la salud. Se estudió el papel del contexto socioeconómico del barrio en la salud del sueño en los últimos años, pero los resultados son inconsistentes. El objetivo del estudio fue investigar la asociación entre la segregación residencial socioeconómica y los problemas de sueño. Se utilizó datos de la 2ª evaluación (2012-2014) de 9918 servidores públicos participantes del Estudio Longitudinal de Salud del Adulto (ELSA-Brasil). Se evaluó la segregación residencial socioeconómica a través de la estadística Getis-Ord Local Gi*. La duración y privación del sueño, las quejas de insomnio y somnolencia diurna se obtuvieron a través de entrevista. Se utilizaron modelos de regresión logística binomial y multinominal para estimar el odds ratio (OR). Con respecto al sueño, el 49% tenía una duración corta y el 3% tenía una duración larga, el 23% relató quejas de insomnio, el 45% relató privación de sueño, el 42% relató somnolencia diurna y el 48% relató ≥ 2 problemas de sueño. En el modelo ajustado por variables demográficas y socioeconómicas, hubo una asociación entre la alta segregación residencial socioeconómica y la duración corta de sueño (OR = 1,22; IC95%: 1,07; 1,40), la privación de sueño (OR = 1,20; IC95%: 1,05; 1,37), la somnolencia diurna (OR = 1,17; IC95%: 1,03; 1,34) y ≥ 2 problemas asociados con el sueño (OR = 1,24; IC95%: 1,08; 1,41). Personas que viven en barrios con una alta segregación residencial socioeconómica presentan una mayor probabilidad de tener duración corta del sueño, privación de sueño, somnolencia diurna y ≥ 2 problemas asociados con el sueño. Estas informaciones resaltan que medidas de políticas públicas para reducir las desigualdades socioeconómicas pueden contribuir a mejorar la salud del sueño en la población.

[Perceived risk from COVID-19 and depression, anxiety, and stress among workers in healthcare units]. / Percepção de risco de adoecimento por COVID-19 e depressão, ansiedade e estresse entre trabalhadores de unidades de saúde.

The objective was to analyze associations between perceived risk from COVID-19 and symptoms of depression, anxiety, and stress among workers in healthcare units. This was a cross-sectional study of workers from different professions who appeared voluntarily at one of the first COVID-19 Testing Centers in the municipality of Rio de Janeiro, Brazil. The workers were invited to answer an online questionnaire from May to August 2020. The COVID-19 Risk Perception Scale and the Depression, Anxiety, and Stress Scale (DASS-21) were used. Odds ratios (OR) and 95% confidence intervals were estimated. Of the total sample (N = 2,996), 81.5% were women, and mean age was 40.7 years. About half presented mild, moderate, or severe depression, anxiety, or stress, and the rates for workers with severe symptoms were 18.5%, 29.6%, and 21.5%, respectively. The associations between perceived risk and symptoms of depression, anxiety, and stress increased with the increase in each symptom's severity. Workers with higher perceived risk from COVID-19 showed higher OR for severe symptoms of depression (OR = 4.67), anxiety (OR = 4.35), and stress (OR = 4.97). The findings point to the demand for measures to protect workers' health and that should not be limited to personal protective equipment. It is essential for health system administrators to promote collective spaces for discussion and actions to favor workers' recovery in the context of a prolonged pandemic.

O objetivo foi analisar as associações entre a percepção de risco de adoecimento por COVID-19 e os sintomas de depressão, ansiedade e estresse em profissionais atuantes em unidades de saúde. Estudo transversal com trabalhadores de diversas categorias profissionais que buscaram voluntariamente um dos primeiros Centros de Referência em Testagem de COVID-19 no Município do Rio de Janeiro, Brasil. Os trabalhadores foram convidados a responder a um questionário online entre maio e agosto de 2020. Foram utilizadas a escala Percepção de Risco de Adoecimento por COVID-19 e a Escala de Depressão, Ansiedade e Estresse (DASS-21). Foram estimados razão de chance (OR) e intervalo de 95% de confiança. Do total (N = 2.996), 81,5% eram mulheres com idade média de 40,7 anos. Cerca da metade apresentava grau leve, moderado ou severo de depressão, ansiedade ou estresse, sendo a frequência de trabalhadores com sintomas severos, respectivamente, 18,5%, 29,6% e 21,5%. Observou-se que as associações entre a percepção de risco e os sintomas de depressão, ansiedade e estresse foram mais fortes à medida que aumentava a classificação de gravidade de cada sintoma. Os trabalhadores com alta percepção de risco de adoecimento por COVID-19 apresentaram OR mais elevadas para sintomas severos de depressão (OR = 4,67), ansiedade (OR = 4,35) e estresse (OR = 4,97). Os achados apontam a demanda por medidas de proteção à saúde dos trabalhadores, que não devem se restringir aos equipamentos de proteção individual. É essencial que os gestores promovam espaços coletivos de discussão e ações que favoreçam a recuperação dos trabalhadores em contexto pandêmico de longa duração.

El objetivo fue analizar las asociaciones entre la percepción de riesgo de enfermedad por COVID-19 y los síntomas de depresión, ansiedad y estrés en profesionales activos en unidades de salud. Estudio transversal con trabajadores de diversas categorías profesionales que buscaron voluntariamente uno de los primeros Centros de Referencia en Tests de COVID-19 en el municipio de Río de Janeiro, Brasil. Los trabajadores fueron invitados a responder a un cuestionario online entre mayo y agosto de 2020. Se utilizaron la escala Percepción de Riesgo de Enfermedad por COVID-19 y la Escala de Depresión, Ansiedad y Estrés (DASS-21). Se estimaron razón de oportunidad (OR) e intervalo de 95% de confianza. Del total (N = 2.996), un 81,5% eran mujeres con una edad media de 40,7 años. Cerca de la mitad presentaba grado leve, moderado o severo de depresión, ansiedad o estrés, siendo la frecuencia de trabajadores con síntomas severos, respectivamente, 18,5%, 29,6% y 21,5%. Se observó que las asociaciones entre la percepción de riesgo y los síntomas de depresión, ansiedad y estrés fueron más fuertes a medida que aumentaba la clasificación de la gravedad de cada síntoma. Los trabajadores con alta percepción de riesgo de enfermedad por COVID-19 presentaron OR más elevadas para síntomas severos de depresión (OR = 4,67), ansiedad (OR = 4,35) y estrés (OR = 4,97). Los resultados apuntan la demanda de medidas de protección a la salud de los trabajadores, que no se deben restringir a equipamientos de protección individual. Es esencial que los gestores promuevan espacios colectivos de discusión y acciones que favorezcan la recuperación de los trabajadores en un contexto pandémico de larga duración.

Cognitive function and blood pressure control in elderly hypertensive individuals. / Função cognitiva e controle da pressão arterial em idosos hipertensos.

This article aims to estimate the prevalence of cognitive impairment and analyze its association with blood pressure control in elderly hypertensive individuals. Cross-sectional study of 383 elderly hypertensive individuals in the state of Piauí, Brazil. The authors collected sociodemographic and clinical data, performed blood pressure measurement, and assessed cognitive function using the Montreal Cognitive Assessment (MoCA) test. Poisson regression with robust variance was used. Overall prevalence of cognitive impairment was 74.4%, higher in the age group 80 years and over and among older persons with less schooling. Prevalence of uncontrolled blood pressure was 61.6%, with a higher proportion in the elderly with cognitive impairment. An association was observed between cognitive impairment and uncontrolled blood pressure (aPR: 3.98; 95%CI = 2.51-6.33). The significant association between cognitive function and blood pressure control suggest that cognitive impairment is an important risk factor for uncontrolled blood pressure in older persons. The inclusion of screening measures for possible cognitive deficits may be useful for better monitoring blood pressure levels among elderly hypertensive individuals.

O objetivo deste artigo é estimar a prevalência de comprometimento cognitivo e analisar sua associação com o controle da pressão arterial em idosos hipertensos. Trata-se de um estudo transversal realizado com 383 idosos hipertensos no estado do Piauí, Brasil. Foram coletados dados sociodemográficos, clínicos, realizada aferição da pressão arterial e avaliação da função cognitiva utilizando o teste Montreal Cognitive Assessment (MoCA). Utilizou-se regressão de Poisson com variância robusta. A prevalência de comprometimento cognitivo foi de 74,4%, sendo maior na faixa etária entre 80 anos ou mais de idade e naqueles com menor escolaridade. A prevalência de pressão arterial não controlada foi de 61,6%, com maior proporção entre os idosos com comprometimento cognitivo. Observou-se associação entre o comprometimento cognitivo e pressão arterial não controlada (RPAjustada: 3,98; IC95% = 2,51-6,33). A associação significativa entre função cognitiva e controle pressórico sugere que comprometimento cognitivo é um importante fator de risco para pressão arterial não controlada em pessoas idosas. A inclusão de medidas de rastreamento para possíveis déficits cognitivos podem ser úteis para melhor monitoramento da elevação dos níveis pressóricos entre idosos hipertensos.

Gender, work-family conflict, and weight gain: four-year follow-up of the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil).

This study sought to analyze the effect of work-to-family conflict (demands from work that affect one's family/personal life), family-to-work conflict (demands from family/personal life that affect work), and lack of time for self-care and leisure due to professional and domestic demands on the incidence of weight gain and increase in waist circumference by gender in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). Our study included 9,159 ELSA-Brasil participants (4,413 men and 4,746 women) who attended baseline (2008-2010) and the first follow-up visit (2012-2014). Weight gain and increase in waist circumference were defined as an annual increase ≥ 75th percentile, i.e., ≥ 1.21kg/year and ≥ 1.75cm/year, respectively for women; and ≥ 0.96kg/year and ≥ 1.41cm/year respectively for men. Associations were estimated by Poisson regression applying robust variance with the R software. Analyses were stratified by gender and adjusted for socioeconomic variables. Adjusted models showed a higher risk of weight gain among women who reported family-to-work conflict frequently and sometimes (relative risk - RR = 1.37 and RR = 1.15, respectively) and among those who reported frequent lack of time for self-care and leisure (RR = 1.13). Among men, time-based work-to-family conflict (RR = 1.17) and strain-based work-to-family conflict (RR = 1.24) were associated with weight gain. No associations were observed between work-family conflict domains and increase in waist circumference. These findings suggest that occupational and social health promotion programs are essential to help workers balance work and family life to reduce weight gain.

Is work-family conflict a pathway between job strain components and binge eating? A cross-sectional analysis from the ELSA-Brasil study.

BACKGROUND: Job strain has been reported as a trigger for binge eating, yet the underlying mechanisms have been unclear. The aim of this study was to evaluate whether work-family conflict is a pathway in the association between job strain and binge eating, considering the possible effect-modifying influence of body mass index (BMI). METHODS: This cross-sectional analysis included 12,084 active civil servants from the multicenter Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). Job strain was assessed using the Demand-Control-Support Questionnaire. Work-family conflict was considered as a latent variable comprising three items. Binge eating was defined as eating a large amount of food in less than 2 h at least twice a week in the last six months with a sense of lack of control over what and how much was eaten. Structural equation modelling was used to test the role of work-family conflict in the association between job strain and binge eating, stratifying for BMI. RESULTS: For individuals of normal weight, positive associations were found between skill discretion and binge eating (standardized coefficient [SC] = 0.209, 95%CI = 0.022-0.396), and between psychological job demands and work-family conflict (SC = 0.571, 95%CI = 0.520-0.622), but no statistically significant indirect effect was found. In overweight individuals, psychological job demands, skill discretion, and work-family conflict were positively associated with binge eating (SC = 0.099, 95%CI = 0.005-0.193; SC = 0.175, 95%CI = 0.062-0.288; and SC = 0.141, 95%CI = 0.077-0.206, respectively). Also, work-family conflict was observed to be a pathway on the associations of psychological job demands and decision authority with binge eating (SC = 0.084, 95%CI = 0.045-0.122; and SC = - 0.008, 95%CI = - 0.015- - 0.001, respectively). CONCLUSIONS: Work-family conflict partly explains effects of high levels of psychological job demands and low levels of decision authority on binge eating among overweight individuals. Moreover, skill discretion is positively associated with binge eating, regardless of BMI category.

Recent studies have found work-family conflict (i.e., incompatible work and family demands) to link between work issues and physical and mental health. Accordingly, this study investigated whether the relationship between job strain and binge eating is explained by work-family conflict, by body mass index (BMI), in a large sample of Brazilian civil servants. Overall, this study demonstrated that, among overweight individuals, excessive job demands and low decision authority (over what to do at work and how) contribute to binge eating by increasing work-family conflict. Also, excessive skill discretion at work, including opportunities to acquire and use specific job skills, is related to binge eating, regardless of BMI, which deserves further investigation. In conclusion, the results indicate that work-family conflict is a potential mechanism through which job strain can affect eating behavior among overweight individuals.

Relationship between sleeping on the night shift and recovery from work among nursing workers - the influence of domestic work.

AIM: This paper is a report of a study on the association between sleep patterns during work nights and recovery from work among nursing workers, considering domestic work hours. BACKGROUND: Several hospitals allow nursing workers to sleep during the night shift, but this is rarely evaluated from the workers' health perspective. The need for recovery from work concept can be useful for testing the impact of night work on sleep. Recovery is not a problem if workers have enough time to recover between periods of work. Therefore, domestic work would be likely to interfere in the recovery process. METHODS: This cross-sectional study was carried out at three hospitals in 2005-2006, through a comprehensive questionnaire. All nursing teams engaged in assistance to patients were invited to participate. Analyses included female night workers with no incidence of insomnia. Participants (n = 396) were classified into those who did not sleep during night shifts, those who slept for up to 2 hours and those who slept for 2-3 hours. RESULTS: Binomial logistic regression analysis showed that sleeping on the job for 2-3 hours during night shifts is related to a better recovery from work provided the workers do not undergo long domestic work hours. CONCLUSIONS: Being allowed to sleep at work during night shifts seemed to contribute to, but was not enough to guarantee, a good recovery from work in the studied population. Recommendations to deal with sleep-deprivation among night workers should consider the complexity of gender roles on the recovery process.

Doses of exposure to night shift work and nutritional status among nursing workers.

Introduction: Exposure to night work (NW) has been identified as a possible risk factor for body weight gain. Recent studies highlight the need to assess the intensity and frequency of exposure to night work (i.e., years of exposure and number of nights worked). Objectives: To investigate the relationships between the dose of exposure to night work (years working nights and number of nights worked) and nutritional status (excess weight, waist circumference), abdominal obesity, and body mass index in nursing professionals. Methods: Data were analyzed on night workers (n = 529) from a public hospital in Rio de Janeiro, Brazil. Descriptive analyses were conducted and crude and adjusted regression models were constructed to test the associations between exposures and outcomes. Analyses were performed using R, version 2.15. Results: Working at night for 10 years or more was associated with excess weight (odds ratio [OR] = 1.76; 95% confidence interval [95%CI] 1.14-2.72), with abdominal obesity (OR = 1.76; 95%CI 1.14-2.74), with increased body mass index (ß = 2.28; 95%CI 1.31-3.26), and with increased waist circumference (ß = 4.63; 95%CI 2.38-6.88), when compared with exposure to NW for less than 10 years, after adjusting for covariates. The current dose of night work only exhibited a borderline association between > 5 nights/fortnight and abdominal obesity (OR = 1.55; 95%CI 1.01-2.01). Conclusions: Detailing night work exposure can contribute data to support strategies for organizing working hours that consider the possibility of limiting the time exposed to night work.

Introdução: A exposição ao trabalho noturno (TN) vem sendo apontada como possível fator de risco para o aumento do peso corporal. Estudos recentes destacam a necessidade de avaliação da intensidade e da frequência da exposição ao TN (ou seja, anos de exposição e número de noites trabalhadas). Objetivos: Investigar a relação entre a dose de exposição ao TN (anos e número de noites trabalhadas) e o estado nutricional (excesso de peso, circunferência abdominal, obesidade abdominal e índice de massa corporal) em profissionais de enfermagem. Métodos: Foram analisados os dados referentes aos trabalhadores noturnos (n = 529) de um hospital público do Rio de Janeiro. Realizaram-se análises descritivas e modelos de regressão brutos e ajustados para testar as associações entre as exposições e os desfechos. As análises foram realizadas no programa R, versão 2.15. Resultados: Trabalhar à noite por 10 anos ou mais associou-se ao excesso de peso (odds ratio [OR] = 1,76; intervalo de confiança de 95% [IC95%] 1,14-2,72), à obesidade abdominal (OR = 1,76; IC95% 1,14-2,74), ao índice de massa corporal aumentado (ß = 2,28; IC95% 1,31-3,26) e à cintura abdominal aumentada (ß = 4,63; IC95% 2,38-6,88), comparado ao TN realizado há menos de 10 anos, após ajuste pelas covariáveis. No que se refere à dose atual de TN, foi observada apenas uma associação limítrofe entre mais de 5 noites/quinzena e a obesidade abdominal (OR = 1,55; IC95% 1,01-2,01). Conclusões: O detalhamento da exposição ao TN pode contribuir para subsidiar as estratégias de organização dos horários de trabalho que considerem a possibilidade de limitação do tempo de exposição ao TN.

Impact of Work-Family Conflict on Sleep Complaints: Results From the Longitudinal Study of Adult Health (ELSA-Brasil).

Background: Balancing work and family demands is often a challenge. Family and job responsibilities may affect many aspects of health, and sleep is an important issue. Work-family conflict (WFC) refers to situations where it is difficult to reconcile family and professional demands. WFC can act in two directions: work-to-family conflicts occur when job demands interfere in family life; family-to-work conflicts arise when family demands interfere with job performance. This study evaluated whether dimensions of WFC-time- and strain-related, work-to-family conflict; family-to-work conflict; and lack of time for self-care and leisure due to work and family demands-were cross-sectionally and longitudinally associated with sleep complaints, by gender. Methods: The sample comprised 9,704 active workers (5,057 women and 4,647 men) from the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). Standardized questionnaires were used to collect data. WFC was measured at baseline (2008-2010), and sleep complaints were measured at baseline and approximately 4 years after the first visit (2012-2014). To test the association between the four WFC dimensions and sleep complaints, crude and multiple logistic regressions were conducted to estimate odds ratios and 95% confidence intervals. The adjusted model included age, education, marital status, hours worked and work schedule. Results: Mean age at baseline was 48.2 years. Most participants were educated to University degree level (54.5%), married (68.2%) and worked ≤ 40 h/week (66.1%). At baseline, 48.3% of women and 41.1% of men reported sleep complaints. Frequent WFC was reported by women and men, respectively, as follows: time-related work-to-family conflict (32.6 and 26.1%), strain-related work-to-family conflict (25.3 and 16.0%), family-to-work conflict (6.6 and 7.6%) and lack of time for self-care (35.2 and 24.7%). For both women and men, time- and strain-related work-to-family conflicts and conflicts for lack of time for self-care were cross-sectionally and longitudinally associated with sleep complaints. The findings also suggest a weaker and non-significant association between family-to-work conflict and sleep complaints. Conclusions: The statistically significant associations observed here underline the importance of reducing WFC. In the modern world, both WFC and sleep problems are increasingly recognized as frequent problems that often lead to ill health, thus posing a public health challenge.

Does Work after Retirement Matter? Sleep Features among Workers in the Brazilian Longitudinal Study of Adult Health.

A growing number of people keep working after retirement, a phenomenon known as bridge employment. Sleep features, which are related to morbidity and mortality outcomes, are expected to be influenced by bridge employment or permanent retirement. The objective of this study was to analyze sleep duration and quality of bridge employees and permanent retirees compared to nonretired, i.e., active workers, from the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). Participants (second wave of ELSA-Brasil, 2012-2014) comprised permanently retired (n = 2348), career bridge workers (n = 694), bridge workers in a different place (n = 760), and active workers (n = 6271). The associations of all studied retirement schemes and self-reported sleep quality and duration were estimated through logistic and linear regression analysis. Workers from all studied retirement schemes showed better sleep patterns than active workers. In comparison to active workers, bridge workers who had changed workplace also showed a reduced chance of difficulty falling asleep and too-early awakenings, which were not found among career bridge workers. Bridge employment and permanent retirement were associated with a reduced chance of reporting sleep deficit. Bridge work at a different place rather than staying at the same workplace seems to be favorable for sleep. Further study is needed to explain mechanisms.

On-shift naps are associated with systolic and diastolic blood pressure level among night working nursing professionals.

Few studies have analyzed on-shift naps with regard to shift workers' health. The aim of this study was to examine the association between exposure to night work (intensity and length of exposure to night work) and blood pressure (BP), considering the impact of on-shift naps. A cross-sectional study was carried out at a hospital based on a questionnaire and measurement of BP. The outcomes were systolic blood pressure (SBP), diastolic blood pressure (DBP), and casual hypertension (HTN), i.e., SBP > 140 mmHg, or DBP > 90 mmHg, or reporting a prescription of antihypertensive medication. The sample comprised 449 fixed 12 h night workers who were (unofficially) allowed to nap during the night shift for up to 3 h. Approximately 42% of the sample reported napping. Among non-nappers (but not among nappers), those exposed to more work nights (≥5/fortnight) showed a DBP that was 3.66 mmHg higher than that of the reference group. The likelihood of casual HTN was more than three-fold greater among non-nappers working more nights/fortnight than among those working fewer nights/fortnight. A similar tendency was observed in a subsample of workers who did not take antihypertensive medication. The results were less consistent regarding length of exposure to night work (in years). A possible explanation is that workers who usually take on-shift naps could experience suppression of the BP increase derived from the many nights worked, while the non-nappers did not experience this suppression. The results may be explained by the relationship between napping, melatonin secretion, and attenuation of circadian misalignment. Napping likely contributes to creating a "physiologically nocturnal environment" that tends to favor the circadian system and, therefore, health. Possible negative effects related to sleep inertia deserve attention. The findings encourage new studies on this topic to improve the management of night work at hospitals in regard to workers' health.

Association between Presenteeism, Psychosocial Aspects of Work and Common Mental Disorders among Nursing Personnel.

Presenteeism is the term used to describe going in to work even with a health problem. The phenomenon has been identified as one prior factor in sickness absence and, accordingly, the better it is understood, the better will be the prevention strategies. This study aimed to examine the mediating role of presenteeism (the ability to concentrate on work and to complete work despite a health problem) in the association between psychosocial factors at work and common mental disorders (CMD). This cross-sectional study included 1218 nursing personnel at a public hospital in Brazil. Structural equation modelling was performed. The sample comprised mostly women (85.4%), and the mean age was 44.1 (SD = 11.3; range: 24-70) years. Prevalence of presenteeism was 32.8%. Among presenteeist workers (n = 400), a relationship was observed between presenteeism and higher CMD scores. Furthermore, being able to concentrate on work even with a health problem mediated the relationship between social support and CMD and between psychological demands and CMD. Working when sick impairs both the work and the worker's health. Interventions designed to improve working conditions and interpersonal relations can be effective strategies against presenteeism.

Lifetime night work exposure and the risk of type 2 diabetes: results from the longitudinal study of adult health (ELSA-Brasil).

The aim of this research project was to test the effects of lifetime night work exposure on type 2 diabetes (T2DM) risk. The Brazilian Longitudinal Study of Adult Health (ELSA-Brasil) is a prospective cohort study of chronic conditions, such as diabetes and cardiovascular disease. The participants (N = 15105) were recruited (2008-2010) at five public universities and one research institute in six cities in Brazil. Participants from the first wave (2008-2010) were followed up for a mean of 3.8 years. Current analyses comprise 4671 women and 3965 men. Hazard ratios (HR) were estimated using Cox regression models. Crude T2DM incidence rates were 2.26 and 1.44 per 100 person-years, respectively, for women and men who reported ≥ 10 years' working nights. In women, ≥ 10 years of night work was associated with a higher risk of T2DM (HR 1.46 [95% CI: 1.03; 2.08]), after adjusting for age, education, work hours, and BMI. The additional adjustment for physical activity attenuated the association (HR 1.36 [95% CI: 0.94; 1.96]). In men, the results were not statistically significant (HR = 0.65 [95% CI: 0.40; 1.07]). The findings indicate the effects of lifetime night work on T2DM incidence seem to be greater among women than men.

Sex differences in the association between self-reported sleep duration, insomnia symptoms and cardiometabolic risk factors: cross-sectional findings from Brazilian longitudinal study of adult health.

BACKGROUND: The U-shaped associations between sleep durations and cardiometabolic risk factors (glycated hemoglobin levels, obesity, hypertriglyceridemia, hypertension and cholesterol levels) are still inconclusive. Moreover, as sleep is comprised of quantitative and qualitative aspects, exploring both insomnia symptoms and sleep duration are relevant when evaluating the potential effects of sleep problems on health. The aim was to evaluate sex-specific associations between sleep problems and cardiometabolic risk factors. METHODS: This cross-sectional study used data from wave two of the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil), including 7491 women and 6232 men. Questionnaires were administered to provide information about socioeconomic conditions, lifestyle, and sleep characteristics. A 12-h fasting blood sample was drawn to measure serum cholesterol, triglycerides, and glycated hemoglobin. Blood pressure, weight and height were also measured using standard equipment. Generalized additive models were used to evaluate the curve shape of the relationship between self-reported sleep duration and the outcomes. Logistic regression was performed to investigate the magnitude of the associations of self-reported sleep duration, insomnia symptoms, and short sleep plus insomnia symptoms with cardiometabolic risk factors. RESULTS: For women, self-reported sleep duration and insomnia symptoms (either separately or linked to short sleep duration) were associated with obesity, hypertension and glycated hemoglobin after adjusting for the confounders. The magnitudes of the associations between self-reported short sleep duration plus insomnia symptoms and the outcomes were slightly increased, considering sleep duration or insomnia symptoms separately. For men, both long sleep duration and insomnia symptoms were associated with hypertriglyceridemia after adjusted for the confounders. CONCLUSION: These findings suggest possible sex-specific patterns, since obesity, hypertension and high glycated hemoglobin were associated with self-reported sleep duration and insomnia symptoms in women, but not in men, and reinforce the importance of considering quantitative and qualitative aspects of sleep for the prevention and management of the outcomes.

Working Time Society consensus statements: Psychosocial stressors relevant to the health and wellbeing of night and shift workers.

This consensus report summarizes the negative impact of work-related psychosocial factors and job stressors on the health and wellbeing of shift workers. Psychosocial factors may (a) directly affect work schedules or (b) mediate or moderate relationships between work schedules, circadian factors, and health. In this paper, prominent psychosocial models (e.g. Job Strain and Effort-Reward Imbalance) are used to help assess detrimental effects, including pathophysiologic outcomes. Several studies indicate the psychosocial environment can be more problematic for shift workers compared to regular day workers. This is likely due to shift worker's experiencing greater risks of low job control, high physical work demands, lower support from supervisors, and greater levels of over-commitment. Workplace violence is another frequently encountered psychosocial stressor for shift workers more likely to be in regular contact with the general public, such as police officers, security personnel, professional drivers, and other service employees being at elevated risk. A large body of literature confirms night and irregular shift schedules increase risk for injury. Non-diurnal schedules can trigger and worsen such incidents, especially under unsafe conditions. The problem of workplace violence for shift workers, in terms of severity and consequences, is probably underestimated, especially when present among other occupational stressors. Practical considerations and recommendations for action to mitigate the detrimental effects of psychosocial stressors on night and shift workers are presented.

Structural equation modeling of associations between night work and glycemic levels.

OBJECTIVE: Different pathways may lead from night work to metabolic diseases, including type 2 diabetes. This study aimed to explore the direct and indirect pathways from night work to glycemic levels, considering the role of physical activity, waist circumference and snacking using data from ELSA-Brasil. MATERIALS AND METHODS: A structural equation model was used to confirm the pathways from night work to glycemic levels. The latent variable, "glycemic levels", included fasting glucose, glycated hemoglobin and 2-hour plasma glucose. RESULTS: A total of 10.396 participants were included in the analyses. The final model showed that among women, night work was associated with increased glycemic levels. A statistical significant association between night work and glycemic levels mediated by waist circumference was observed among women and men. CONCLUSIONS: The association between night shift and glycemic levels can be interpreted as an important step toward understanding the pathways that could explain night work as a risk factor for diabetes using epidemiological data.

A segregação residencial socioeconômica está associada aos problemas do sono? Insights do ELSA-Brasil / Is socioeconomic residential segregation associated with sleep problems? Insights from ELSA-Brasil / ¿Está asociada la segregación residencial socioeconómica con problemas de sueño? Insights de ELSA-Brasil

Resumo: O sono é influenciado por diversos fatores e é essencial para a saúde. O papel do contexto socioeconômico da vizinhança na saúde do sono foi estudado nos últimos anos, mas os resultados são inconsistentes. O objetivo deste estudo foi investigar a associação entre a segregação residencial socioeconômica e os problemas do sono. Utilizou-se dados da 2ª avaliação (2012-2014) de 9.918 servidores públicos participantes do Estudo Longitudinal de Saúde do Adulto (ELSA-Brasil). A segregação residencial socioeconômica foi avaliada por meio da estatística Getis-Ord Local Gi*, e a duração e privação do sono, as queixas de insônia e a sonolência diurna foram obtidas por meio de entrevistas. Para as estimativas da odds ratio (OR), foram utilizados modelos de regressão logística binomial e multinomial. Em relação ao sono, 49% tinham curta duração e 3% longa duração, 23% relataram queixas de insônia, 45% relataram privação do sono, 42% relataram sonolência diurna e 48% relataram ≥ 2 problemas do sono. No modelo ajustado por variáveis demográficas e socioeconômicas, houve associação entre alta segregação residencial socioeconômica e duração curta do sono (OR = 1,22; IC95%: 1,07; 1,40), privação do sono (OR = 1,20; IC95%: 1,05; 1,37), sonolência diurna (OR = 1,17; IC95%: 1,03; 1,34) e ≥ 2 problemas associados do sono (OR = 1,24; IC95%: 1,08; 1,41). Indivíduos que vivem em vizinhanças com alta segregação residencial socioeconômica apresentam maior chance de terem curta duração, privação do sono, sonolência diurna e ≥ 2 problemas associados ao sono. Essas informações reforçam que políticas públicas para reduzir as desigualdades socioeconômicas podem contribuir para melhorar a saúde do sono da população.

Abstract: Several factors influence sleep, which is essential for health. While the role of neighborhood socioeconomic context on sleep health has been studied in recent years, results are inconsistent. The study aimed to investigate the association between socioeconomic residential segregation and sleep problems, using data from the second evaluation (2012-2014) of 9,918 public servants participating in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). Socioeconomic residential segregation was assessed using the Getis-Ord Local Gi* statistic. Sleep duration and deprivation, complaints of insomnia, and daytime sleepiness were obtained through interviews. Binomial and multinomial logistic regression models were used to estimate the odds ratio (OR). Regarding sleep, 49% had short duration and 3% long duration, 23% reported complaints of insomnia, 45% sleep deprivation, 42% daytime sleepiness, and 48% reported ≥ 2 sleep problems. In the model adjusted for demographic and socioeconomic variables, there was an association between high socioeconomic residential segregation and short sleep duration (OR = 1.22; 95%CI: 1.07; 1.40), sleep deprivation (OR = 1.20; 95%CI: 1.05; 1.37), daytime sleepiness (OR = 1.17; 95%CI: 1.03; 1.34) and ≥ 2 associated sleep problems (OR = 1.24; 95%CI: 1.08; 1.41). Individuals living in neighborhoods with high socioeconomic residential segregation are more likely to have short sleep duration, sleep deprivation, daytime sleepiness, and ≥ 2 associated sleep problems. This information reinforces that public policy measures to reduce socioeconomic inequalities can improve the population's sleep health.

Resumen: El sueño se influye por varios factores y es esencial para la salud. Se estudió el papel del contexto socioeconómico del barrio en la salud del sueño en los últimos años, pero los resultados son inconsistentes. El objetivo del estudio fue investigar la asociación entre la segregación residencial socioeconómica y los problemas de sueño. Se utilizó datos de la 2ª evaluación (2012-2014) de 9918 servidores públicos participantes del Estudio Longitudinal de Salud del Adulto (ELSA-Brasil). Se evaluó la segregación residencial socioeconómica a través de la estadística Getis-Ord Local Gi*. La duración y privación del sueño, las quejas de insomnio y somnolencia diurna se obtuvieron a través de entrevista. Se utilizaron modelos de regresión logística binomial y multinominal para estimar el odds ratio (OR). Con respecto al sueño, el 49% tenía una duración corta y el 3% tenía una duración larga, el 23% relató quejas de insomnio, el 45% relató privación de sueño, el 42% relató somnolencia diurna y el 48% relató ≥ 2 problemas de sueño. En el modelo ajustado por variables demográficas y socioeconómicas, hubo una asociación entre la alta segregación residencial socioeconómica y la duración corta de sueño (OR = 1,22; IC95%: 1,07; 1,40), la privación de sueño (OR = 1,20; IC95%: 1,05; 1,37), la somnolencia diurna (OR = 1,17; IC95%: 1,03; 1,34) y ≥ 2 problemas asociados con el sueño (OR = 1,24; IC95%: 1,08; 1,41). Personas que viven en barrios con una alta segregación residencial socioeconómica presentan una mayor probabilidad de tener duración corta del sueño, privación de sueño, somnolencia diurna y ≥ 2 problemas asociados con el sueño. Estas informaciones resaltan que medidas de políticas públicas para reducir las desigualdades socioeconómicas pueden contribuir a mejorar la salud del sueño en la población.