Independent association between weekly physical activity, calibrated energy intake, and BMI and risk of incident kidney stones in multivariate-adjusted analyses
| Variable | aHRa (95% CI) | P Value |
|---|---|---|
| Physical activity | <0.001 | |
| Inactive | Reference | |
| 0.1–4.9 METs/wk | 0.84 (0.74 to 0.97) | |
| 5–9.9 METs/wk | 0.78 (0.68 to 0.90) | |
| 10–19.9 METs/wk | 0.69 (0.60 to 0.79) | |
| 20–29.9 METs/wk | 0.70 (0.59 to 0.83) | |
| ≥30 METs/wk | 0.69 (0.58 to 0.83) | |
| Calibrated energy intake | <0.001 | |
| <1800 kcal/d | 1.03 (0.74 to 1.43) | |
| 1800–1999 kcal/d | Reference | |
| 2000–2199 kcal/d | 1.04 (0.90 to 1.20) | |
| 2200–2499 kcal/d | 1.26 (1.03 to 1.55) | |
| ≥2500 kcal/d | 1.42 (1.02 to 1.98) | |
| BMI | 0.01 | |
| <18.5 kg/m2 (underweight) | 0.79 (0.47 to 1.34) | |
| 18.5–24.9 kg/m2 (normal weight) | Reference | |
| 25–29.9 kg/m2 (overweight) | 1.21 (1.07 to 1.37) | |
| 30–34.9 kg/m2 (moderately obese) | 1.36 (1.13 to 1.63) | |
| ≥35 kg/m2 (severely obese) | 1.31 (1.02 to 1.68) |
↵a Adjusted for age (continuous); race (category); history of diabetes; use of calcium supplement; hormone replacement therapy (category); income (dichotomized); region (category); and quintile intake of water, sodium, animal protein, and dietary calcium.