Table 1 Characteristics of the study populationa
Characteristic | Knee rOA (n= 1635)b | Knee sxOA (n= 1605)b |
|---|---|---|
Mean whole blood Pbc, μg/dl (±SD) | 2.4 (2.5) | 2.4 (2.5) |
Mean age, yr (±SD) | 65.3 (11.0) | 65.2 (11.0) |
Mean BMI, kg/m2 (±SD) | 31.2 (7.1) | 31.2 (7.1) |
African-Americans, n (%) | 582 (35.6%) | 573 (35.7%) |
Women, n (%) | 1085 (66.4%) | 1069 (66.6%) |
Current smoker, n (%) | 259 (16.5%) | 257 (16.6%) |
Current drinker, n (%) | 333 (21.2%) | 329 (21.2%) |
Knee outcomes | rOA | sxOA |
   Present, n (%) | 659 (40.3%) | 384 (23.9%) |
   Bilateral, n (%) | 377 (23.1%) | 170 (10.6%) |
   Moderate to severe, n (%) | 426 (26.1%) | 271 (16.9%) |