Table 2

Relative risks (RR) and 95% confidence intervals (CI) for developing osteoarthrosis in women exposed to high and to medium physical loads of various kinds, compared with those with low exposure

Medium exposure High exposure
Exposure2-150 RR 95% CI Exposed cases RR 95% CI Exposed cases
Sitting (h)0.80.5, 1.21060.80.4, 1.359
Standing (h)1.40.8, 2.21231.60.9, 2.859
Heavy lifts (n)1.10.7, 1.71011.50.9, 2.582
Twisted position (h)1.10.7, 1.81101.60.9, 2.672
Jumps (n)1.00.5, 2.0152.11.1, 4.224
Stairs climbed (n)1.30.8, 2.01062.11.2, 3.680
Non-occupational physically demanding tasks (y)1.60.8, 2.9242.31.5, 3.681
  • 2-150 Exposures aggregated from the age of 16 to the age of 50. RR adjusted for age, body mass index, smoking, sports activities, number of children, and hormone therapy.