1.
Virtanen, Marianna, et al.
(författare)
Long working hours and alcohol use : systematic review and meta-analysis of published studies and unpublished individual participant data.
2015
Ingår i: BMJ (Clinical research ed.). - : BMJ. - 1756-1833 .- 0959-8138. ; 350, s. Art. no. g7772-
Tidskriftsartikel (refereegranskat) abstract
OBJECTIVE: To quantify the association between long working hours and alcohol use.DESIGN: Systematic review and meta-analysis of published studies and unpublished individual participant data.DATA SOURCES: A systematic search of PubMed and Embase databases in April 2014 for published studies, supplemented with manual searches. Unpublished individual participant data were obtained from 27 additional studies.REVIEW METHODS: The search strategy was designed to retrieve cross sectional and prospective studies of the association between long working hours and alcohol use. Summary estimates were obtained with random effects meta-analysis. Sources of heterogeneity were examined with meta-regression.RESULTS: Cross sectional analysis was based on 61 studies representing 333 693 participants from 14 countries. Prospective analysis was based on 20 studies representing 100 602 participants from nine countries. The pooled maximum adjusted odds ratio for the association between long working hours and alcohol use was 1.11 (95% confidence interval 1.05 to 1.18) in the cross sectional analysis of published and unpublished data. Odds ratio of new onset risky alcohol use was 1.12 (1.04 to 1.20) in the analysis of prospective published and unpublished data. In the 18 studies with individual participant data it was possible to assess the European Union Working Time Directive, which recommends an upper limit of 48 hours a week. Odds ratios of new onset risky alcohol use for those working 49-54 hours and ≥55 hours a week were 1.13 (1.02 to 1.26; adjusted difference in incidence 0.8 percentage points) and 1.12 (1.01 to 1.25; adjusted difference in incidence 0.7 percentage points), respectively, compared with working standard 35-40 hours (incidence of new onset risky alcohol use 6.2%). There was no difference in these associations between men and women or by age or socioeconomic groups, geographical regions, sample type (population based v occupational cohort), prevalence of risky alcohol use in the cohort, or sample attrition rate.CONCLUSIONS: Individuals whose working hours exceed standard recommendations are more likely to increase their alcohol use to levels that pose a health risk.
2.
Nordin, Maria, 1967-
(författare)
Low social support and disturbed sleep : epidemiological and psychological perspectives
2006
Doktorsavhandling (övrigt vetenskapligt/konstnärligt) abstract
The Swedish work force underwent dramatic changes during an economic crisis in the 1990s. In the aftermath, sick leave increased at an unprecedented rate and stress-related disorders, such as burnout, depression, and sleep disturbances replaced earlier work-related diagnoses. Sleep disturbances have been demonstrated to both precede and succeed mental and physical illnesses, including burnout, depression, anxiety, and cardiovascular disease. Disturbed sleep is also a common complaint in Sweden as well as in the rest of the Western world. Sleep has been shown to easily be disturbed by cognitive, emotional, and physiological arousal (stress). However, several studies have demonstrated that social support has a protective effect against the adverse effects of stress as well as a generally beneficial effect on health. Other studies, though, suggest that lack of social support may increase the risk for mental and physical ill-health. The purpose of this thesis was therefore to investigate the association between social support and disturbed sleep; foremost in working populations.Epidemiological methods were applied to investigate the association between social support and disturbed sleep. Three studies were used; a cross-sectional (MONICA, n = 1,179), a longitudinal (WOLF, n = 2,479), and a case-referent (SHEEP and VHEEP in conjunction, n = 6,231) study. The data was obtained by questionnaires, and social support was operationalized as network and emotional support. Disturbed sleep was defined as difficulties falling asleep, difficulties maintaining sleep, repeated awakenings, and disturbed sleep. Gender was taken into consideration throughout the studies.Foremost, low network support was found to increase the risk for contracting disturbed sleep. Which source the network support was derived from did not alter the association between low network support and disturbed sleep—low network support at work increased the risk for disturbed sleep as did low network outside work. Prolonged low network support and impaired emotional support did also increase the risk for sleep disturbances in men who were under strain at work. Furthermore, open coping buffered against low network support in the association with disturbed sleep five years later in women, whereas low network support increased the risk for developing disturbed sleep at a later date when interacting with covert coping both in women and in men. Moreover, disturbed sleep was shown to mediate low network support in myocardial infarction in women.In conclusion, the association between social support and disturbed sleep is complex and includes both interactions with other personality variables and mediating associations. Previous research on negative effects of low social support was confirmed as was previously observed gender differences in social support.
3.
Stenlund, Therese, et al.
(författare)
Patients with burnout in relation to gender and a general population
2007
Ingår i: Scandinavian Journal of Public Health. - : SAGE Publications. - 1403-4948 .- 1651-1905. ; 35:5, s. 516-523
Tidskriftsartikel (refereegranskat) abstract
AIMS: The aims of this study were to describe gender differences in patients with burnout and compare these patients with a general population with respect to physical, psychosocial and work variables. METHODS: Data were collected from a total of 136 patients (96 women and 40 men, 41.6 +/- 7.4 years), diagnosed with stress-related disease and burnout at the Stress Clinic, University Hospital of Umeå. Data on burnout, physical, psychosocial and work characteristics were compared with similar data from a geographical and age-matched population based survey, the 2004 Northern Sweden MONICA study. The survey sample included a total of 573 participants (283 women and 290 men, 40.7 +/- 8.5 years). RESULTS: Women with burnout reported a higher rate of impaired awakening, lower job control, greater proportion of unpaid work and worked to a greater extent "with people" compared to men. Men with burnout had a more restricted social network and reported working more overtime than women. Patients with burnout reported a higher rate of unemployment, a more restricted social network and higher work demands compared to a general population. Women with burnout reported less emotional support, a more sedentary work situation, high job strain and worked to a greater extent "with people" than women from the general population. CONCLUSIONS: There are some differences in working conditions and social network between women and men with burnout. Patients with burnout differ from a general population regarding individual and social factors as well as work-related factors.
4.
Karlsson, Berndt, et al.
(författare)
Total mortality and cause-specific mortality of Swedish shift- and dayworkers in the pulp and paper industry in 1952-2001.
2005
Ingår i: Scandinavian journal of work, environment & health. - : Scandinavian Journal of Work, Environment and Health. - 0355-3140 .- 1795-990X. ; 31:1
Tidskriftsartikel (refereegranskat) abstract
The study investigated the relationship between shiftwork and mortality, both total mortality and cause-specific mortality from coronary heart disease (CHD), stroke, and diabetes. Methods The cohort consisted of 2354 shiftworkers and 3088 dayworkers in two pulp and paper manufacturing plants. The mortality of the cohort was monitored from 1 January 1952 to 31 December 2001 by linkage to the national Cause of Death Register. Groups of workers defined by different durations of shiftwork exposure were compared with dayworkers by calculating standardized relative rates (SRR).
5.
Heikkilä, Katriina, et al.
(författare)
Job strain and COPD exacerbations: an individual-participant meta-analysis
2014
Ingår i: European Respiratory Journal. - : European Respiratory Society (ERS). - 0903-1936 .- 1399-3003. ; 44:1, s. 247-251
Tidskriftsartikel (refereegranskat) abstract
To the Editor:Chronic obstructive pulmonary disease (COPD) is a major cause of mortality and disability worldwide (1). The clinical course of COPD is characterised by exacerbations, which can be minor and manageable at home or in primary care, or severe, leading to hospitalisation or even death. Known causes of exacerbations include tobacco smoke, air pollution, dusts and fumes, and respiratory infections (1, 2). One less well understood risk factor is stress, which could plausibly lead to COPD exacerbations as it can trigger inflammation (3, 4) and is associated with increased smoking (5), which are both implicated in COPD pathology (2). Work is an important source of stress in the age groups in which COPD is typically diagnosed (1, 6). However, we are not aware of previous investigations of work-related stress and the risk of COPD exacerbations.In this study, we examined the associations between job strain (the most widely studied conceptualisation of work-related stress) and severe COPD exacerbations using individual-level data from 10 prospective cohort studies from the Individual Participant Data Meta-analysis in Working Populations (IPD-Work) Consortium (7). Job strain is defined as a combination of high demands (excessive amounts of work) and low control (having little influence on what tasks to.
6.
du Prel, Jean-Baptist, et al.
(författare)
Work overcommitment : Is it a trait or a state?
2018
Ingår i: International Archives of Occupational and Environmental Health. - : Springer Science and Business Media LLC. - 0340-0131 .- 1432-1246. ; 91:1, s. 1-11
Tidskriftsartikel (refereegranskat) abstract
Effort-reward imbalance (ERI) is a well-tested work-related stress model with three components, the two extrinsic components efforts and rewards and the one intrinsic component overcommitment. While an imbalance between efforts and rewards leads to strain reactions, work-related overcommitment (OC) has been described as a personal characteristic with a set of attitudes, behaviours, and emotions reflecting excessive striving combined with a strong desire for approval. However, the question whether OC is a personality trait or a response pattern sensitive to changes in the work context (state) is still open. 2940 Swedish industrial employees were included in this longitudinal analysis of the WOLF-Norrland data over 5 years. A change of OC index or its subscales were regressed against a change of freedom of choice at work, extra work, and ERI adjusted for age, sex, and education. While OC was insensitive to changes in freedom of choice at work and extra work, it was clearly associated with changes of work-related stress over time. Three of four OC subscales exhibited statistically significant associations with ERI. For the first time, we studied fundamental characteristics of OC as an independent personality variable (trait) or an outcome variable subject to changes in the work environment (state). The association between external ERI and OC over time supports our hypothesis of OC being a state. Further investigations are needed to establish OC as a trait or a state.
7.
Heikkilä, Katriina, et al.
(författare)
Job Strain as a Risk Factor for Peripheral Artery Disease : A Multi-Cohort Study
2020
Ingår i: Journal of the American Heart Association. - : Wiley-Blackwell. - 2047-9980. ; 9:9
Tidskriftsartikel (refereegranskat) abstract
Background Job strain is implicated in many atherosclerotic diseases, but its role in peripheral artery disease (PAD) is unclear. We investigated the association of job strain with hospital records of PAD, using individual-level data from 11 prospective cohort studies from Finland, Sweden, Denmark, and the United Kingdom. Methods and Results Job strain (high demands and low control at work) was self-reported at baseline (1985-2008). PAD records were ascertained from national hospitalization data. We used Cox regression to examine the associations of job strain with PAD in each study, and combined the study-specific estimates in random effects meta-analyses. We used τ2, I2, and subgroup analyses to examine heterogeneity. Of the 139 132 participants with no previous hospitalization with PAD, 32 489 (23.4%) reported job strain at baseline. During 1 718 132 person-years at risk (mean follow-up 12.8 years), 667 individuals had a hospital record of PAD (3.88 per 10 000 person-years). Job strain was associated with a 1.41-fold (95% CI, 1.11-1.80) increased average risk of hospitalization with PAD. The study-specific estimates were moderately heterogeneous (τ2=0.0427, I2: 26.9%). Despite variation in their magnitude, the estimates were consistent in both sexes, across the socioeconomic hierarchy and by baseline smoking status. Additional adjustment for baseline diabetes mellitus did not change the direction or magnitude of the observed associations. Conclusions Job strain was associated with small but consistent increase in the risk of hospitalization with PAD, with the relative risks on par with those for coronary heart disease and ischemic stroke.
8.
Fransson, Eleonor I., et al.
(författare)
The Association between Job Strain and Atrial Fibrillation : Results from the Swedish WOLF Study
2015
Ingår i: BioMed Research International. - : Hindawi Publishing Corporation. - 2314-6133 .- 2314-6141.
Tidskriftsartikel (refereegranskat) abstract
Introduction: Atrial fibrillation (AF) is a common heart rhythmdisorder. Several life-style factors have been identified as risk factors for AF, but less is known about the impact of work-related stress. This study aims to evaluate the association between work-related stress, defined as job strain, and risk of AF. Methods: Data from the Swedish WOLF study was used, comprising 10,121 working men and women. Job strain was measured by the demand-control model. Information on incident AF was derived from national registers. Cox proportional hazard regression was used to estimate hazard ratios (HR) and 95% confidence intervals (CI) for the association between job strain and AF risk. Results: In total, 253 incident AF cases were identified during a total follow-up time of 132,387 person-years. Job strain was associated with AF risk in a time-dependent manner, with stronger association after 10.7 years of follow-up (HR 1.93, 95% CI 1.10-3.36 after 10.7 years, versus HR 1.11, 95% CI 0.67-1.83 before 10.7 years). The results pointed towards a dose-response relationship when taking accumulated exposure to job strain over time into account. Conclusion: This study provides support to the hypothesis that work-related stress defined as job strain is linked to an increased risk of AF.
9.
Virtanen, Marianna, et al.
(författare)
Long working hours and depressive symptoms : systematic review and meta-analysis of published studies and unpublished individual participant data
2018
Ingår i: Scandinavian Journal of Work, Environment and Health. - : Nordic Association of Occupational Safety and Health. - 0355-3140 .- 1795-990X. ; 44:3, s. 239-250
Forskningsöversikt (refereegranskat) abstract
Objectives This systematic review and meta-analysis combined published study-level data and unpublished individual-participant data with the aim of quantifying the relation between long working hours and the onset of depressive symptoms. Methods We searched PubMed and Embase for published prospective cohort studies and included available cohorts with unpublished individual-participant data. We used a random-effects meta-analysis to calculate summary estimates across studies. Results We identified ten published cohort studies and included unpublished individual-participant data from 18 studies. In the majority of cohorts, long working hours was defined as working ≥55 hours per week. In multivariable-adjusted meta-analyses of 189 729 participants from 35 countries [96 275 men, 93 454 women, follow-up ranging from 1-5 years, 21 747 new-onset cases), there was an overall association of 1.14 (95% confidence interval (CI) 1.03-1.25] between long working hours and the onset of depressive symptoms, with significant evidence of heterogeneity (I 2=45.1%, P=0.004). A moderate association between working hours and depressive symptoms was found in Asian countries (1.50, 95% CI 1.13-2.01), a weaker association in Europe (1.11, 95% CI 1.00-1.22), and no association in North America (0.97, 95% CI 0.70-1.34) or Australia (0.95, 95% CI 0.70-1.29). Differences by other characteristics were small. Conclusions This observational evidence suggests a moderate association between long working hours and onset of depressive symptoms in Asia and a small association in Europe.
10.
Knutsson, Anders, et al.
(författare)
Postprandial responses of glucose, insulin and triglycerides : Influence of the timing of meal intake during night work
2002
Ingår i: Nutrition and Health. - : SAGE Publications. - 0260-1060 .- 2047-945X. ; 16, s. 133-141
Tidskriftsartikel (refereegranskat) abstract
The objective was to study the postprandial responses of glucose, insulin and triglycerides to meal intake at different clock times during night work. Eleven night shift working nurses participated. Identical test meals were ingested at 19:30, 23:30 and 03:30, and contained 440 kcal/ 1860 kJ of energy (33 E% fat, 51 E% carbohydrate, 16 E% protein). The food intake was standardized three days before the first test meal. Blood samples were drawn just before the test meals were ingested and thereafter at 30, 60, 90, 120, 180 and 240 minutes. The postprandial responses were estimated as the total area under the curve (AUC) and significance testing was done using repeated measures ANOVA. The highest insulin level was found after meal intake at 23:30, and the lowest after meal intake 03:30. The glucose response showed the same pattern. The insulin response to food intake in night working nurses is more pronounced in the night compared with morning and evening. The results would have implications for metabolic and cardiovascular disorders in night workers.
