. Author manuscript; available in PMC: 2019 Jun 1.

Published in final edited form as: Aliment Pharmacol Ther. 2018 Apr 17;47(11):1472–1479. doi: 10.1111/apt.14665

Table 3.

Multivariate Cox proportional hazard analysis examining factors associated with IBD-related surgery or hospitalization in biologic-treated patients with ulcerative colitis

Variables	Hazard ratio	95% CI	p-value
Body mass index (per 1kg/m² increase)	1.078	1.020-1.138	0.008
Prior prednisone use (yes vs. no)	1.894	0.559-6.419	0.305
Concomitant immunomodulators (yes vs. no)	1.006	0.481-2.104	0.988
Albumin (<3.5g/dl vs. ≥3.5g/dl)	1.318	0.548-3.165	0.537
Disease duration (per 1y)	0.999	0.934-1.068	0.974
Prior anti-TNF failure (yes vs. no)	0.675	0.290-1.571	0.362
Prior hospitalization (yes vs. no)	2.261	1.012-5.053	0.047

[Abbreviations: CI=confidence interval, TNF=tumour necrosis factor]