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Table 1 Characteristics of the study participants

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

Variables Frequency %
Age (years) < 50 591 37.4
≥50 990 62.6
Subjective physical loading Low or slightly hard 252 16.0
Hard 650 41.2
Very hard 676 42.8
Present illness No 1417 89.6
Yes 164 10.4
Injury experience No 1186 75.0
Yes 395 25.0
Frequency of meal service 1 1179 74.6
2–3 402 25.4
Career (years) ~ 9 635 40.3
10~19 864 54.9
≥20 75 4.8
Type of job Chefs (manager) 263 16.6
Cooks or assistants 1318 83.4
Job control Yes 591 37.6
No 982 62.4
Household work (hours) < 2 1052 66.7
≥2 526 33.3
Working hour < 48 1285 81.3
≥48 296 18.7
Type of school High 467 29.5
Middle 358 22.6
Elementary 756 47.8
Total 1581 100.0