Table 2.

Multivariate analysis of risk factors predicting need for inpatient rescue therapy (medical or surgical) in hospitalized patients with acute severe colitis.

Characteristic	Odds Ratio	95% Confidence Interval	P
Lowest hemoglobin (for each 1 g/dL increase)	0.76	0.65–0.90	0.002
Fecal calprotectin > 800 mcg/g	2.53	115–5.89	0.021