Table 1. General characteristics of the study population and distribution of A-MSDS by body part.
| Variables | Overall (n = 394) |
Percentage of A-MSDS by body part (%) |
||||||
| n | % | Neck (n = 162) | Shoulders and upper limbs (n = 168) | Upper back (n = 134) | Lower back (n = 118) | Hips and lower limbs (n = 210) | At least one body part (n = 306) | |
| Age group (mean 35.8, SD ± 8, range 18–63) | ||||||||
| ≤30 | 105 | 26.6 | 55.2 | 56.2 | 45.7 | 26.7 | 39.0 | 78.1 |
| 31–40 | 186 | 47.2 | 29.0 | 29.6 | 24.2 | 23.1 | 64.0 | 80.6 |
| 41–50 | 85 | 21.6 | 57.6 | 58.8 | 43.5 | 54.1 | 57.6 | 78.8 |
| ≥51 | 18 | 4.6 | 5.6 | 22.2 | 22.2 | 5.6 | 5.6 | 38.9 |
| Education level | ||||||||
| Secondary school and lower | 108 | 27.4 | 58.3 | 62.0 | 49.1 | 46.3 | 38.9 | 77.8 |
| High school | 252 | 64 | 31.3 | 32.5 | 26.2 | 22.6 | 61.9 | 79.8 |
| Vocational/college training | 34 | 8.6 | 55.6 | 52.8 | 41.7 | 30.6 | 33.3 | 58.3 |
| Marital status | ||||||||
| Single | 48 | 12.2 | 62.5 | 62.5 | 43.8 | 31.3 | 27.1 | 70.8 |
| Married and live with spouse | 330 | 83.8 | 37.9 | 39.4 | 33.0 | 28.5 | 58.2 | 79.4 |
| Widow/divorce | 16 | 4 | 43.8 | 50.0 | 25.0 | 56.3 | 31.3 | 62.5 |
| Number of children | ||||||||
| Not yet | 62 | 15.7 | 72.9 | 75.0 | 56.3 | 39.6 | 41.7 | 91.7 |
| 1 or 2 | 308 | 78.2 | 35.5 | 36.7 | 29.4 | 27.9 | 56.1 | 74.8 |
| >2 | 24 | 6.1 | 62.5 | 68.8 | 62.5 | 43.8 | 31.3 | 93.8 |
| Number of working days per week | ||||||||
| ≤6 | 306 | 77.7 | 32.4 | 34.3 | 25.5 | 20.3 | 49.0 | 76.1 |
| 7 | 88 | 22.3 | 71.6 | 71.6 | 63.6 | 63.6 | 34.1 | 83.0 |
| Years of working | ||||||||
| ≤5 years | 111 | 28.2 | 45.0 | 51.4 | 37.8 | 26.1 | 28.8 | 62.2 |
| 6–10 years | 141 | 35.8 | 19.9 | 22.7 | 19.1 | 17.7 | 62.4 | 78.7 |
| 11–15 years | 82 | 20.8 | 45.1 | 40.2 | 39.0 | 31.7 | 67.1 | 85.4 |
| >15 years | 60 | 15.2 | 78.3 | 76.7 | 55.0 | 63.3 | 58.3 | 93.3 |