Table 2.

Multivariate analysis of factors predicting the success of medical expulsive therapy

Variables	OR	95% CI	P
Age	3.456	0.433-27.566	0.242
Sex	2.127	0.322-14.061	0.434
Side of stone	0.571	0.099-3.287	0.530
Stone size	0.037	0.005-0.289	0.002
CRP	0.013	0.003-0.056	0.001

OR: Odds ratio, CI: Confidence interval, CRP: C-reactive protein