Effects of modified ligation of intersphincteric fistula tract on intestinal barrier function in patients with transsphincteric anal fistula

Table 1 Baseline data in the two groups, n (%)/mean ± SD

Item	n	Control group (n = 49)	Research group (n = 52)	χ2/t/Z	P value
Gender				0.219	0.640
Male	56	26 (53.06)	30 (57.69)
Female	45	23 (46.94)	22 (42.31)
Age (years)	101	44.73 ± 6.82	46.90 ± 7.44	1.525	0.130
Disease duration (months)	101	8.00 (6.00, 11.00)	8.50 (5.00, 11.00)	-0.423	0.672
BMI (kg/m2)	101	22.00 (20.00, 24.00)	23.50 (21.00, 25.75)	-1.581	0.114
Number of fistulas (n)	101	3.00 (2.00, 3.00)	2.00 (2.00, 3.00)	-1.039	0.299
ASA classification				0.965	0.617
I	35	18 (36.73)	17 (32.69)
II	41	21 (42.86)	20 (38.46)
III	25	10 (20.41)	15 (28.85)

BMI: Body mass index; ASA: American Society of Anesthesiologists.