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Table 2 Factors affecting anal fistula healing failure in all patients

From: Healing of rectal advancement flaps for anal fistulas in patients with and without Crohn’s disease: a retrospective cohort analysis

 

Healing

n = 86 (56%)

Healing failure

n = 69 (44%)

Missing

P-value

Cox regression

Hazard ratio (95% CI)

P-value

Age, years

43 (12–73)

36 (14–64)

0

0.063

0.992 (0.973–1.010)

0.377

Sex, female

32 (37)

39 (56)

0

0.013

1.515 (0.847–2.707)

0.161

BMI, m2/kg

25 (17–42)

25 (17–44)

4

0.460

ASA, 1–2

78 (91)

66 (97)

0

0.191

0.779 (0.233–2.600)

0.685

Immunosuppression, yes

17 (20)

24 (35)

0

0.027

0.894 (0.422–1.896)

0.771

Pathogenesis

Crohn’s disease

Other

26 (30)

60 (70)

29 (42)

40 (58)

0

0.088

0.884 (0.423–1.849)

0.743

Rectovaginal fistulas

9 (38)

15 (62)

0

0.044

0.675 (0.341–1.336)

0.259

Protective stoma

19 (22)

20 (29)

0

0.213

  1. ASA Score = American Society of Anesthesiologists Score, BMI = Body mass index