Randomized controlled trial of minimally invasive surgery using acellular dermal matrix for complex anorectal fistula

Table 2 Vaizey score system

	Never	Rare	Sometimes	Each week	Everyday
Frequency of incontinence	0	1	2	3	4
Solid	0	1	2	3	4
Liquid	0	1	2	3	4
Gas	0	1	2	3	4
Alteration in lifestyle				No	Yes
Need to wear a pad or plug				0	2
Use of constipating medication				0	2
Lack of ability to defer defecation for 15 min				0	4