Table 5

Dose-risk relation between the number of main risk factors and low back pain

Exposures6-150
n
Total Low back pain
n (%)
Adjusted for age and sex
OR (95% CI)
Test for trend,
χ2 p value
0745157  (21)1.015.0, p<0.005
118053 (29)1.5 (1.04 to 2.3)
28230 (37)2.0 (1.2 to 3.3)
32613 (50)3.3 (1.4 to 7.7)
  • 6-150 Lifting >25 lb (11 kg) with one hand, lifting >50 lb (23 kg) with two hands, carrying >50 lb (23 kg) on one shoulder.