| Period I n=428 n=65 |
Period II n=177 n=31 |
Period III n=132 n=351 |
||||
|---|---|---|---|---|---|---|
| Variable | Private | Non-Private | Private | Non-Private | Private | Non-Private |
| Physical work | 15.2 | 28.8 | 17.2 | 22.7 | 15.3 | 24.8 |
| Leg pain | 96.3 | 96.9 | 94.9 | 93.8 | 93.2 | 94.0 |
| Lumbar pain | 83.8 | 92.2 | 85.9 | 64.5 | 79.4 | 75.0 |
| Sick leave | 73.9 | 61.0 | 53.2 | 47.8 | 65.8 | 60.1 |
| Smoking | 26 | 25 | 19 | 3 | 17 | 16 |