Table 3:
Sensitivity analysis with BMI-defined obesity categories to evaluate the relation of obesity, sarcopenic obesity and sarcopenia with risk of incident radiographic knee osteoarthritis over 5 years among community-dwelling older adults
| Sex-specific body composition category | n/N | Crude RR | Adjusted *RR |
|---|---|---|---|
| Overall: | |||
| Obese | 151/585 | 1.81 | 1.87 (1.46-2.40) |
| Sarcopenic Obese | 29/110 | 1.77 | 1.99 (1.32-3.02) |
| Sarcopenic | 31/212 | 1.00 | 1.03 (0.68-1.54) |
| Non-obese (ref) | 111/760 | 1.00 | 1.00 |
| Women: | |||
| Obese | 98/326 | 1.80 | 1.87 (1.37-2.54) |
| Sarcopenic Obese | 16/64 | 1.50 | 1.60 (0.93-2.77) |
| Sarcopenic | 22/114 | 1.16 | 1.15 (0.71-1.86) |
| Non-obese (ref) | 77/461 | 1.00 | 1.00 |
| Men: | |||
| Obese | 53/259 | 1.80 | 1.92 (1.24-3.00) |
| Sarcopenic Obese | 13/46 | 2.49 | 2.89 (1.49-5.59) |
| Sarcopenic | 9/98 | 0.80 | 0.80 (0.38-1.67) |
| Non-obese (ref) | 34/299 | 1.00 | 1.00 |
*
Adjusted for age, height, race, physical activity (PASE score), smoking, Charlson’s comorbidity index and knee injury