Table 4.
OR (95 % CI) of nephrolithiasis by commonly recommended hydration practices. Reference group comprises stone-free participants
| Common hydration practice | History of kidney stone | First kidney stone* | Recurrent kidney stone* | |||
|---|---|---|---|---|---|---|
| OR | 95 % CI | OR | 95 % CI | OR | 95 % CI | |
| Water intake | ||||||
| Daily water intake >2500 ml/d | 0·52 | 0·31, 0·85 | 0·47 | 0·24, 0·90 | 0·59 | 0·27, 1·30 |
| Daily water intake >3000 ml/d | 0·47 | 0·24, 0·93 | 0·54 | 0·23, 1·25 | 0·35 | 0·10, 1·19 |
| Total fluid intake > 5000 g/d | 0·57 | 0·35, 0·93 | 0·58 | 0·28, 1·19 | 0·54 | 0·28, 1·02 |
| Urine flow rate > 2 l/d | 0·66 | 0·49, 0·89 | 0·67 | 0·46, 0·97 | 0·65 | 0·40, 1·05 |
| Urine flow rate > 2·5 l/d | 0·63 | 0·41, 0·98 | 0·66 | 0·39, 1·11 | 0·58 | 0·26, 1·28 |
*
Analyses were performed using the full-adjusted multinomial logistic regression model.