Table 3.

Univariate logistic regression analysis

	HR	P	95% CI	SE
Gender (male vs female)	1.767	0.024	0.639 to 0.931	0.227
Age (< 60 vs ≥ 60)	1.579	0.042	0.506 to 0.913	0.163
Stone location (left vs right)	1.344	0.055	0.535 to 0.947	0.178
Smoking history (yes vs no)	1.352	0.073	0.453 to 0.854	0.142
Drinking history (yes vs no)	1.431	0.086	0.612 to 0.953	0.241