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Table 4 Relative risk of four outcome indicators of musculoskeletal disorders according to major variables

From: Evaluation of the prevalence of musculoskeletal symptoms, presumptive diagnosis, medical care use, and sick leave among female school meal service workers

Variables Subjective symptoms, % Presumptive diagnosis by physician, % Medical care use (≥7 days/year), % Sick leave by musculoskeletal diseases%
RR (95% CI) RR (95% CI) RR (95% CI) RR (95% CI)
Age (years) < 50 1.00 1.00 1.00 1.00
≥50 1.04 (1.00–1.09) 1.17 (1.06–1.30) 1.26 (0.85–1.85) 1.17 (1.02–1.34)
Subjective Physical loading Low 1.00 1.00 1.00 1.00
Hard 1.32 (1.21–1.44) 2.39 (1.84–3.11) 1.32 (0.68–2.53) 1.59 (1.21–2.08)
Very hard 1.45 (1.33–1.58) 2.92 (2.25–3.78) 1.91 (1.02–3.59) 2.11 (1.63–2.74)
Present illness No 1.00 1.00 1.00 1.00
Yes 1.03 (0.98–1.08) 1.51 (1.37–1.66) 1.28 (0.78–2.08) 1.26 (1.06–1.48)
Injury experience No 1.00 1.00 1.00 1.00
Yes 1.04 (0.99–1.08) 1.05 (0.95–1.15) 1.60 (1.11–2.30) 1.16 (1.02–1.33)
Type of school High 1.00 1.00 1.00 1.00
Middle 1.04 (0.98–1.10) 1.09 (0.96–1.24) 1.08 (0.62–1.88) 1.23 (1.02–1.47)
Elementary 1.00 (0.96–1.05) 0.99 (0.89–1.11) 1.46 (0.94–2.26) 1.16 (0.99–1.36)
  1. By log-binomial regression. Adjusted by age, subjective physical loading, present illness, injury experience, and type of school