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Table 3 Cox proportional hazard ratios with 95% confidence intervals (CI) of occupational groups, psychosocial working conditions and job strain for being granted DP due to MSD during the follow-up

From: Register-based data of psychosocial working conditions and occupational groups as predictors of disability pension due to musculoskeletal diagnoses: a prospective cohort study of 24 543 Swedish twins

    Model 1     Model 2  
  HR 95% CI HR 95% CI
Occupational groups defined by sector     
Administration& management 1.00 referent 1.00 referent
Technology, science, social science& art 1.27 1.01, 1.59 1.27 1.01, 1.60
Health care& social work 2.13 1.78, 2.55 2.19 1.81, 2.65
Commercial work 1.28 1.01, 1.63 1.20 0.94, 1.53
Agriculture, forestry& fishing 1.89 1.40, 2.54 1.49 1.07, 2.05
Transport 2.35 1.84, 3.00 1.89 1.40, 2.55
Production& mining 2.63 2.18, 3.18 2.16 1.72, 2.72
Service& military work 2.37 1.95, 2.87 1.96 1.56, 2.46
Psychosocial working conditions     
Job demands (range 1–10, high score is low) 1.31 1.22, 1.41 1.10 1.02, 1.20
Job control (range 1–10, high score is high) 0.85 0.82, 0.88 0.93 0.89, 0.97
Social support (range 1–10, high score is high) 1.05 0.95, 1.15 1.08 0.98, 1.19
Job strain     
High strain 0.88 0.69, 1.12 0.93 0.73, 1.19
Low strain 1.00 referent 1.00 referent
Active 0.76 0.64, 0.90 0.89 0.75, 1.07
Passive 1.33 1.14, 1.55 1.25 1.07, 1.46
Iso-strain 1.32 1.08, 1.63 1.27 1.04, 1.57
  1. Model 1: Additionally (after taking age, sex and pair-cluster into account) adjusted for marital status, children living at home, area of living, and years of education.
  2. Model 2: As Model 1, but additionally adjusted for occupational groups, or psychosocial working conditions.