Table VI.

Risk estimates of PSL ≥10,000 mg.

		95% CI
Characteristic	Risk estimate	Lower	Upper
Male gender	2.292	0.631	8.317
Age ≥40 years	0.269	0.054	1.348
Disease duration ≥4 years	7.333	1.954	27.528
Seo’s CIDAI ≥220 points	0.170	0.046	0.628
Prior AZA treatment	3.403	0.974	11.891
Undermining ulcer present	0.417	0.122	1.421
Pancolitis	0.700	0.208	2.353
C7-HRP positive	2.000	0.580	6.898

Values in bold print are statistically significant. AZA, azathioprine; CI, confidence interval; CIDAI, complex integrated disease activity index.