Table 4.

Risk factors related to the prognosis of patients at 12 months after stent removal using multivariate analysis.

Variables	Regression coefficients	Standard error	Wald test	p-value	OR	95% CI
Length of US	−0.373	0.138	7.291	0.007	0.689	0.525–0.903
Time of USP	−0.145	0.071	4.138	0.042	0.865	0.752–0.995
Single stent			10.357	0.006
Double stents	0.327	0.369	0.785	0.376	1.387	0.673–2. 859
Triple stents	1.265	0.405	9.741	0.002	3.542	1.601–7.839
Constant	1.043	0.385	7.324	0.007	2.838

US, ureteral stricture; USP, ureteral stent placement; OR, odds ratio; CI, confidence interval.