Table 4. Uni- and multivariate logistic regression analyses for predictors of stone-free status.

		Univariate			Multivariate
		OR	95% CI	P value	OR	95% CI	P value
Age		0.981	0.964–0.999	0.036
BMI		0.991	0.931–1.055	0.775
Laterality		0.695	0.440–1.098	0.119
S-ReSC score group
	Low vs intermediate	0.197	0.114–0.338	<0.001	0.376	0.187–0.756	0.006
	Low vs high	0.133	0.064–0.276	<0.001	0.161	0.064–0.402	<0.001
Stone number
	1 versus 2	0.183	0.080–0.417	<0.001	0.126	0.050–0.319	<0.001
	1 versus 3	0.400	0.113–1.421	0.157	0.260	0.068–1.001	0.050
	1 versus 4+	0.083	0.041–0.169	<0.001	0.127	0.055–0.296	<0.001
Largest diameter		0.961	0.937–0.985	0.001
Total stone volume		0.999	0.998–0.999	<0.001

OR, Odds ratio; CI, confidence interval; BMI, body mass index.