Characteristics among 2855 participants according to OA status. Values are mean (SD) unless otherwise indicated.
| Characteristics | Subjects with OA | Subjects without OA | p* |
|---|---|---|---|
| Participants, n | 857 | 1998 | — |
| Serum Mg concentration, mmol/l | 0.91 (0.08) | 0.91 (0.07) | 0.18 |
| Age, yrs | 54.78 (7.64) | 51.18 (6.65) | 0.00 |
| BMI, kg/m2 | 24.92 (3.34) | 24.50 (3.15) | 0.00 |
| Female, % | 58.6 | 56.1 | 0.22 |
| Smoking, % | 24.6 | 25.5 | 0.63 |
| Alcohol drinking, % | 36.9 | 38.0 | 0.56 |
| Nutrients supplementation, % | 37.0 | 32.3 | 0.02 |
| High school diploma, % | 48.7 | 47.2 | 0.47 |
| Waist circumference, cm | 84.41 (9.22) | 82.95 (9.01) | 0.00 |
| Activity level, h/week | 2.16 (3.41) | 1.80 (3.07) | 0.06 |
| Diabetes, % | 11.6 | 9.8 | 0.16 |
| Hypertension, % | 36.8 | 31.0 | 0.00 |
↵* p values are for test of difference between subjects with OA and without OA. OA: osteoarthritis; Mg: magnesium; BMI: body mass index.