Lessons learned from an audit of 1250 anal fistula patients operated at a single center: A retrospective review

Table 3 Transanal opening of the intersphincteric space procedure: Preoperative and postoperative incontinence scores at the long-term follow-up

	Preoperative (n = 357)	Postoperative (n = 357)	Significance
Incontinence (number of patients)	Nil = 334, Gas = 16, Liquid = 6, Solid = 1, Urge = 0	Nil = 328, Gas = 20, Liquid = 6, Solid = 1, Urge = 2	P = 0.47, Not significant, (Fisher exact test)
Vaizey continence scores (mean)	0.077 ± 0.33	0.112 ± 0.44	P = 0.10, Not significant, (Wilcoxon signed rank test)

Vaizey incontinence scores range from minimum = 0 (perfect continence) to 24 (total incontinence). Scores are given for 7 parameters- incontinence to gas (0-4), liquid (0-4), solid (0-4), alteration in lifestyle (0-4), urge incontinence (0-4), need to wear a pad (0-2) or take constipating medicines (0-2).