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

Table 4 Characteristics for patients without and with Crohn’s disease (CD)

	CD patients n = 55	Non-CD patients n = 100	Missing	P-value
Age, years	33 (14–66)	43 (12–73)	0	< 0.001
Sex, female	41 (75)	30 (30)	0	< 0.001
BMI, m²/kg	24.4 (17.3–34.9)	25.6 (16.5–43.6)	4	0.033
ASA, 1–2	54 (98)	90 (90)	0	0.051
Immunosuppression, yes	36 (65)	5 (5)	0	< 0.001
Rectovaginal fistula	16 (29)	8 (8)	0	0.001
Ostomy	27 (49)	12 (12)	0	< 0.001
Fistula healing	26 (47)	60 (60)	0	0.088
Follow-up, days (95% CI)	210 (53–368)	89 (111–267)	0	0.360

CD = Crohn’s disease, ASA Score = American Society of Anesthesiologists Score, BMI = Body mass index. Follow-up estimates by Kaplan Meier: median (95% CI)

ISSN: 1471-2482