Baseline characteristics of the study population
| Characteristics | Study population, n = 3585 | Rotterdam Study, n = 7983 |
|---|---|---|
| CMCI/TC, first carpometacarpal and trapezioscaphoid; DIP, distal interphalangeal; HDL, high-density lipoprotein; MCP, metacarpophalangeal; OA, osteoarthritis; PIP, proximal interphalangeal. | ||
| OA: presence of Kellgren–Lawrence ⩾2 in right/left joint groups (DIP, PIP, MCP, CMC1/TS). | ||
| Values are mean (SD) unless otherwise specified. | ||
| Missing data: diabetes, 8; hypertension, 31; total:HDL-cholesterol ratio, 33; BMI, 19. | ||
| Hand OA, 516; DIP OA, 472; PIP OA, 486; MCP OA, 479; base of thumb, 451. | ||
| Hand OA: presence of Kellgren–Lawrence ⩾2 in two out of three hand joint groups (DIP, PIP, CMC1/TS). | ||
| Female, % | 58.2 | 61.1 |
| Age, years | 66.0 (6.9) | 70.6 (9.8) |
| Body mass index, kg/m2 | 26.3 (3.5) | 26.3 (3.7) |
| Diabetes, % | 7.4 | 10.5 |
| Hypertension, % | 30.1 | 36.1 |
| Total cholesterol, mmol/l | 6.7 (1.2) | 6.6 (1.2) |
| HDL-cholesterol, mmol/l | 1.4 (0.4) | 1.4 (0.4) |
| Total cholesterol:HDL-cholesterol ratio | 5.3 (1.6) | 5.2 (1.6) |
| DIP OA, % | 47.8 | NA |
| PIP OA, % | 17.6 | NA |
| MCP OA, % | 7.8 | NA |
| Base of thumb (CMC1/TS) OA, % | 35.9 | NA |
| Hand OA, % | 27.5 | NA |