| LBP n (%) | No LBP n (%) | p | ORa | pa | |
| Age | <10−3 | ___ | ___ | ||
| 20 - 30 | 20 (17.1) | 21 (25.9) | |||
| 31 - 40 | 24 (20.5) | 37 (45.7) | |||
| 41 - 50 | 46 (39.3) | 16 (19.8) | |||
| 51 - 60 | 27 (23.1) | 7 (8.6) | |||
| BMI* | 0.004 |
| 0.008 | ||
| <25 | 52 (46.4) | 55 (67.0) | 1 | ||
| ≥25 | 60 (53.6) | 27 (33.0) | 2.78 [1.3 - 5.9] | ||
| Number of pregnancies | <10−3 |
| 0.007 | ||
| <3 | 75 (63.6) | 74 (87.1) | 1 | ||
| ≥3 | 43 (36.4) | 11 (12.9) | 3.42 [1.39 - 8.4] | ||
| Number of dependent children | 0.03 | ___ | ___ | ||
| <3 | 101 (85.6) | 81 (95.3) | |||
| ≥3 | 17 (14.4) | 4 (4.7) | |||
| Arthritis | <10−3 |
| 0.004 | ||
| Yes | 34 (29.3) | 7 (8.3) | 4.65 [1.6 - 13.1] | ||
| No | 82 (70.7) | 77 (91.7) | 1 | ||
| Back injury | <10−3 | ___ | ___ | ||
| Yes | 12 (10.2) | 2 (2.4) | |||
| No | 106 (89.8) | 83 (97.6) | |||
| Vertebral pathologies | 0.01 | ___ | ___ | ||
| Yes | 96 (85.0) | 81 (95.3) | |||
| No | 17 (15.0) | 4 (4.7) | |||
| Physical exercise | 0.001 |
| 0.047 | ||
| Yes | 4 (3.4) | 15 (17.6) | 1 | ||
| No | 114 (96.6) | 70 (82.4) | 3.66 [1 - 13.2] | ||