| LBP for at least 1 day | LBP for more than 30 days | LBP radiating to the leg | LBP radiating below the knee | |||||
| OR† (95% CI) | p Value | OR‡ (95% CI) | p Value | OR§ (95% CI) | p Value | OR¶ (95% CI) | p Value | |
| Men | ||||||||
| Driving a car >2 h/day | 1.01 (1.00 to 1.02) | 0.0281 | – | 1.02 (1.01 to 1.03) | 0.0013 | – | ||
| Bending/twisting | 1.02 (1.01 to 1.03) | 0.0007 | 1.04 (1.03 to 1.05) | <0.0001 | – | – | ||
| Pushing/pulling/carrying heavy loads | – | – | – | 1.03 (1.02 to 1.05) | <0.0001 | |||
| Women | ||||||||
| Driving a car >2 h/day | – | 1.06 (1.01 to 1.12) | 0.0319 | – | – | |||
| Bending/twisting | – | 1.04 (1.01 to 1.06) | 0.0094 | 1.03 (1.01 to 1.06) | 0.0073 | – | ||
| Pushing/pulling/carrying heavy loads | – | – | – | 1.06 (1.00 to 1.14) | 0.0664 | |||
†Adjusted for age, smoking, headache, work demand for men age, psychosomatic problems, work demand for women.
‡Adjusted for age, headache, social support at work for men age, psychosomatic problems for women.
§Adjusted for age, BMI, psychosomatic problems, social support at work for men age, social support at work for women.
¶Adjusted for age, BMI, headache for men age for women.
–, Variable not in the model because not associated with the type of LBP studied (p⩾0.15) when exposure to other biomechanical strains and confounders were taken into account.