| LBP subjects n(%) | No LBP n(%) | p | ORa | Pa | |
| Material state | 0.04 | ___ | ___ | ||
| Good | 13 (12.9) | 21 (26.9) | |||
| Fair | 60 (59.4) | 43 (55.1) | |||
| Bad | 28 (27.7) | 14 (17.9) | |||
| Work space | 0.17 | ___ | ___ | ||
| Large | 15 (12.8) | 13 (15.5) | |||
| Enough | 54 (46.2) | 54 (64.3) | |||
| Narrow | 37 (31.6) | 17 (20.2) | |||
| Very narrow | 11 (9.4) | 0 (0.0) | |||
| Layout of material in the work place | 0.005 |
|
0.01 | ||
| Well adapted | 20 (17.1) | 26 (31.0) | 1 | ||
| Just adapted | 47 (40.2) | 42 (50.0) | 1.64 [0.7 - 4.1] | ||
| Little adapted | 36 (30.8) | 15 (18.0) | 3.47 [1.2 - 10.3] | ||
| Not adapted | 14 (12.0) | 1 (1.2) | 28.4 [2.8 - 284.3] | ||
| Trunk flexion | <10−3 | ___ | ___ | ||
| Exceptional | 6 (5.0) | 14 (16.5) | |||
| 1 to 2 times/day | 33 (28.0) | 45 (53.0) | |||
| 3 to 10 times/day | 50 (42.0) | 24 (28.0) | |||
| >10 times/day | 29 (25.0) | 2 (2.5) | |||
| Trunk torsion | <10−3 |
| 0.05 | ||
| Exceptional | 31 (26.0) | 46 (54.0) | 1 | ||
| 1 to 2 times/day | 41 (35.0) | 28 (33.0) | 2.45 [1.0 - 5.7] | ||
| 3 to 10 times/day | 27 (23.0) | 9 (11.0) | 4.5 [1.5 - 13.2] | ||
| >10 times/day | 19 (16.0) | 2 (2.0) | 10.1 [1.9 - 54.0] | ||
| Time granted | <10−3 | __ | __ | ||
| Enough | 35 (31.0) | 37 (44.6) | |||
| Just enough | 51 (45.0) | 38 (46.0) | |||
| Not enough | 22 (19.0) | 7 (8.4) | |||
| Very enough | 6 (5.0) | 1 (1.0) | |||
| Patients’ autonomy | 0.24 | __ | __ | ||
| No | 26 (23.0) | 28 (33.0) | |||
| Slight | 53 (46.5) | 44 (52.0) | |||
| Important | 28 (24.5) | 12 (14.0) | |||
| Very important | 7 (6.0) | 1 (1.0) | |||
| Hardness of material handling | 0.02 | __ | __ | ||
| Null | 15 (19.5) | 25 (40.3) | |||
| Moderate | 28 (36.4) | 16 (25.8) | |||
| Important | 21 (27.3) | 18 (29.0) | |||
| Very important | 13 (17.0) | 3 (4.8) | |||
| Hardness of rise of patients | 0.09 | ___ | ___ | ||
| Null | 1 (1.3) | 6 (10.3) | |||
| Moderate | 35 (43.8) | 26 (44.8) | |||
| Important | 34 (42.5) | 24 (41.4) | |||
| Very important | 10 (12.5) | 2 (34) | |||
| Hardness of maintaining patients | 0.01 | ___ | ___ | ||
| Null | 10 (14.0) | 9 (17.0) | |||
| Moderate | 17 (24.0) | 24 (46.0) | |||
| Important | 21 (29.0) | 13 (25.0) | |||
| Very important | 24 (33.0) | 6 (12.0) | |||