Table 3.

Bivariable and Multivariable Predictors of Failure of Fistula Closure and Residual Incontinence at 3 Months Postrepair

	Relative Risk (95%CI)	Adjusted Risk Ratio*(95%CI)
Predictors of fistula closure
Midvaginal	0.74 (0.56–0.99)	0.93 (0.72–1.21)
Intracervical fistula	0.69 (0.49–0.98)	1.03 (0.73–1.45)
Supratrigonal	0.69 (0.44–1.06)	0.97 (0.68–1.39)
Small bladder	2.08 (1.52–2.83)	1.57 (1.39–1.79)
Prior repair	1.53 (1.23–1.90)	1.40 (1.11–1.76)
Scarring
None or mild	Ref	Ref
Moderate	1.53 (1.02–2.28)	1.15 (0.89–1.49)
Severe	2.79 (1.81–4.28)	1.56 (1.20–2.04)
Urethral involvement
None	Ref	Ref
Partial	1.55 (1.28–1.88)	1.36 (1.11–1.66)
Complete destruction or circumferential	2.34 (1.72–3.16)	1.72 (1.33–2.23)
More than one urinary fistula	1.68 (1.11–2.53)	1.39 (0.95–2.03)
Fistula size (diameter greater than 4 cm)	1.59 (1.07–2.35)	0.81 (0.61–1.07)
Ureter involvement	1.52 (1.06–2.18)	1.01 (0.83–1.25)
Surgeon conductedmore than 200 complex repairs	1.27 (1.02–1.58)	0.97 (0.72–1.30)
Predictors of residual incontinence
Prior repair	1.27 (1.03–1.56)	1.37 (1.13–1.65)
Scarring
None or mild	Ref	Ref
Moderate	1.36 (1.03–1.80)	1.09 (0.84–1.42)
Severe	2.18 (1.81–2.62)	1.35 (1.10–1.67)
Urethral involvement
None	Ref	Ref
Partial	1.82 (1.41–2.34)	1.78 (1.27–2.48)
Complete destruction or circumferential	2.33 (1.72–3.16)	2.06 (1.51–2.81)
Small bladder	1.65 (1.27– 2.14)	1.22 (1.00–1.49)
Surgeon conducted more than 200 complex repairs	1.31 (0.93–1.85)	1.11 (0.77–1.59)

CI, confidence interval.

^*Each variable was adjusted for all other variables listed in the table