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Table 4 Odds ratios and 95% confidence intervals of work-related musculoskeletal symptoms with gender stratification

From: The association between long working hours and work-related musculoskeletal symptoms of Korean wage workers: data from the fourth Korean working conditions survey (a cross-sectional study)

  Weekly working hour Upper limb pain Lower limb pain
Male Female Male Female
OR 95% CI OR 95% CI OR 95% CI OR 95% CI
Crude ≤40 1 Reference 1 Reference 1 Reference 1 Reference
41–52 1.50 1.37–1.65 1.22 1.16–1.33 1.39 1.24–1.55 1.17 1.06–1.29
> 52 1.90 1.73–2.10 1.96 1.76–2.18 2.09 1.87–2.34 1.98 1.77–2.22
Model I* ≤40 1 Reference 1 Reference 1 Reference 1 Reference
41–52 1.37 1.24–1.51 1.28 1.16–1.41 1.27 1.13–1.43 1.23 1.10–1.38
> 52 1.47 1.32–1.64 1.77 1.57–2.00 1.52 1.34–1.73 1.56 1.40–1.72
Model II** ≤40 1 Reference 1 Reference 1 Reference 1 Reference
41–52 1.36 1.23–1.50 1.26 1.14–1.39 1.26 1.11–1.42 1.20 1.07–1.35
> 52 1.40 1.25–1.57 1.66 1.46–1.89 1.47 1.29–1.68 1.47 1.28–1.69
  1. *Adjusted for gender, age, education, occupation, monthly income, employment status, shift work and number of employees
  2. **Adjusted for gender, age, education, occupation, monthly income, employment status, shift work, number of employees, working motion or posture, job stress, and social support