Study protocol: Job strain as a predictor of depressive symptoms - assessing interaction between job demands and job control and examining effect modification by co-existing mental and somatic disorders and low socioeconomic status

This study protocol describes planned analyses to examine the association between job strain and depressive symptoms, with a particular focus on interactions with potential vulnerability factors outside the work environment

Adjusted Odds Ratios (95% CI) for the Association Between Job Strain and Diabetes (N = 44,818 in All Models), the IPD-Work Consortium, 1984–2003.

<p>Adjusted Odds Ratios (95% CI) for the Association Between Job Strain and Diabetes (N  =  44,818 in All Models), the IPD-Work Consortium, 1984–2003.</p

Participant Characteristics According to Study, the IPD-Work Consortium, 1984–2003.

<p>Participant Characteristics According to Study, the IPD-Work Consortium, 1984–2003.</p

Age and sex-adjusted associations of job strain with Crohn's disease or ulcerative colitis.

<p>Age and sex-adjusted associations of job strain with Crohn's disease or ulcerative colitis.</p

Job strain at baseline and inflammatory bowel diseases during the follow-up, by study.

1<p>COPSOQ-II, IPAW, PUMA and WOLF Norrland were excluded from the analyses of job strain and Crohn's disease risk because in these studies no-one with job strain developed Crohn's disease.</p>2<p>After exclusions NB: Inflammatory bowel diseases here refer to Crohn's disease and ulcerative colitis.</p

Multivariable-adjusted associations of job strain with Crohn's disease or ulcerative colitis (adjusted for age, sex, socioeconomic position, smoking and BMI).

<p>Multivariable-adjusted associations of job strain with Crohn's disease or ulcerative colitis (adjusted for age, sex, socioeconomic position, smoking and BMI).</p

Longitudinal associations between job strain and reducing alcohol intake to moderate or no alcohol, among baseline excessive drinkers (n = 4 981)¹².

1<p>Excessive drinker: an individual who drinks more than recommended amounts of alcohol (intermediate or heavy drinker).</p>2<p>Studies and follow-up times: Belstress (4–7 years), FPS (2–4 years), HeSSup (5 years) and Whitehall II (3–9 years.).</p>3<p>Odds ratios (ORs) from a mixed effects logistic model, adjusted for baseline age, sex and baseline socioeconomic position, with study as the random effect.</p

Participant and study summary.

<p>SD: standard deviation.</p>1<p>Study acronyms: DWECS: Danish Work Environment Cohort Study; FPS: Finnish Public Sector Study; HeSSup: Health and Social Support; HNR: Heinz Nixdorf Recall study; IPAW: Intervention Project on Absence and Well-being; POLS: Permanent Onderzoek Leefsituatie; PUMA: Burnout, Motivation and Job Satisfaction study; WOLF: Work Lipids and Fibrinogen. ² Participants with complete data on job strain, age, sex and socioeconomic position.</p>2<p>Moderate drinking (women: 1–14 drinks/week, men: 1–21 drinks/week); intermediate drinking (women: 15–20 drinks/week, men: 22–27 drinks/week); heavy drinking (women: > = 21 drinks/wk, men: > = 28 drinks/week).</p

Association of alcohol intake and job strain (adjusted for age, sex and socioeconomic position) (N = 142 140).

<p>Association of alcohol intake and job strain (adjusted for age, sex and socioeconomic position) (N = 142 140).</p

Longitudinal associations between job strain and taking up excessive drinking¹ among baseline moderate and non-drinkers (n = 43 665)².

1<p>Excessive drinker: an individual who drinks more than recommended amounts of alcohol (intermediate or heavy drinker).</p>2<p>Studies and follow-up times: Belstress (4–7 years), FPS (2–4 years), HeSSup (5 years) and Whitehall II (3–9 years.).</p>3<p>Odds ratios (ORs) from a mixed effects logistic model, adjusted for baseline age, sex and baseline socioeconomic position, with study as the random effect.</p