Baseline characteristics of JoCo and OAI study participants.
| Characteristics | JoCo | OAI | Combined | |||
|---|---|---|---|---|---|---|
| Cases, n = 293 | Controls, n = 297 | Cases, n = 449 | Controls, n = 178 | Cases, n = 742 | Controls, n = 475 | |
| Age, yrs, mean | 64.0 (10.8) | 58.5 (9.6) | 59.6 (8.4) | 57.4 (8.3) | 61.4 (9.6) | 58.1 (9.1) |
| BMI, kg/m2 | 34.7 (8.8) | 30.1 (6.3) | 31.9 (4.6) | 29.0 (4.6) | 33.0 (6.7) | 29.7 (5.7) |
| Women, % | 68.9 | 61.9 | 69.7 | 61.2 | 69.4 | 61.7 |
JoCo: Johnston County Osteoarthritis Project; OAI: Osteoarthritis Initiative; BMI: body mass index.