Table 4 Onset of severe knee pain at three years in people aged 50 and over with non-severe knee pain at baseline by body mass index (BMI) category.
From: Disabling knee pain – another consequence of obesity: Results from a prospective cohort study
BMI category at baseline | Severe knee pain at 3 years | Unadjusted analysis | Adjusted analysisa | |||||
|---|---|---|---|---|---|---|---|---|
n | n (%) | RR (95% CI) | RRb (95% CI) | Potential cases avoidedc (% of all incident cases) | RR (95% CI) | RRb (95% CI) | Potential cases avoidedc (% of all incident cases) | |
Normald | 356 | 56 (15.7) | 1.00 | - | - | 1.00 | - | - |
Overweight | 383 | 67 (17.5) | 1.11 (0.80, 1.54) | 1.00 | 7 (4.2) | 1.07 (0.74, 1.56) | 1.00 | 4 (2.4) |
Obese | 148 | 44 (29.7) | 1.89 (1.34, 2.67) | 1.70 (1.22, 2.36) | 18 (10.8) | 1.77 (1.16, 2.69) | 1.66 (1.10, 2.52) | 18 (10.8) |
Total | 887 | 167 (18.8) | 25 (15.0) | 22 (13.2) | ||||