Relationship between dairy product consumption and the incidence of total hip replacement for osteoarthritis. Model 1 adjusted for body mass index, country of birth, education, smoking status, vigorous physical activity, and energy intake. Model 2 adjusted for body mass index, country of birth, education, smoking status, vigorous physical activity, energy intake, calcium supplementation, hypertension, and diabetes. Values are HR (95% CI) unless otherwise specified.
| Variables | Model 1 | Model 2 |
|---|---|---|
| Men | ||
| Dairy product consumption, per SD | 1.21 (1.10–1.33) | 1.21 (1.10–1.33) |
| p | < 0.001 | < 0.001 |
| Dairy product, quartiles | ||
| 1, ≥ 0 and < 18×/week | 1.00 | 1.00 |
| 2, ≥ 18 and < 32.5×/week | 1.13 (0.87–1.47) | 1.13 (0.87–1.47) |
| 3, ≥ 32.5 and < 48×/week | 1.31 (1.01–1.70) | 1.31 (1.01–1.70) |
| 4, ≥ 48×/week | 1.56 (1.19–2.04) | 1.56 (1.19–2.04) |
| p for trend | 0.001 | 0.001 |
| Women | ||
| Dairy product consumption, per SD | 1.02 (0.95–1.09) | 1.02 (0.95–1.09) |
| p | 0.65 | 0.62 |
| Dairy product, quartiles | ||
| 1, ≥ 0 and < 18×/week | 1.00 | 1.00 |
| 2, ≥ 18 and < 32.5×/week | 1.00 (0.82–1.21) | 1.00 (0.82–1.22) |
| 3, ≥ 32.5 and < 48×/week | 1.08 (0.89–1.30) | 1.08 (0.89–1.30) |
| 4, ≥ 48×/week | 1.07 (0.87–1.30) | 1.07 (0.88–1.30) |
| p for trend | 0.39 | 0.39 |