| Risk factor | LBP (n%) | No LBP (n%) | p | OR | pa |
| Psychological demand | 0.05 | 1.7 [1 - 3] | __ | ||
| Low | 49 (41.5) | 47 (55.3) | |||
| High | 69 (58.5) | 38 (44.7) | |||
| Decision authority | 0.7 | 1.1 [0.6 - 1.9] | __ | ||
| Low | 64 (54.2) | 48 (56.5) | |||
| High | 54 (45.8) | 37 (43.5) | |||
| Social support | 0.6 | 0.9 [0.5 - 1.6] | __ | ||
| Low | 63 53.4 | 43 (50.6) | |||
| High | 55 (46.6) | 42 (49.4) | |||
| Job strain | 0.6 | 1.3 [0.7 - 2.3] | __ | ||
| No | 50 (42.4) | 42 (49.4) | |||
| Yes | 68 (57.6) | 43 (50.6) | |||