Table 2.

Multivariable Cox proportional hazard regression model of risk factors for time to AS

	aHR (95% CI)	P value
Anastomosis (reference: end-to-end)	—	—
End-to-side	1.57 (0.91–2.72)	0.10
Side-to-side	0.90 (0.55–1.49)	0.69
Age at CD diagnosis (yr)	0.98 (0.96–0.99)	0.03
Stricturing CD behavior	1.78(1.003–3.15)	0.049
Postoperative biologic prophylaxis	1.05 (0.63–1.75)	0.85
Ileostomy creation	1.23(0.80–1.91)	0.344
Upper GI CD	1.28 (0.79–2.05)	0.32
≥2 ICR (including index ICR)	1.31 (0.88–1.97)	0.19
Active smoking at time of ICR	1.05 (0.67–1.67)	0.82

aHR, adjusted hazard ratio; CD, Crohn's disease; CI, confidence interval; GI, gastrointestinal; ICR, ileocolonic resection.