Table 3.

Multivariable Analysis of Factors Associated with In-Hospital Mortality in Lower Intestinal Bleeding^a

Characteristic	Adjusted OR (95% CI)	p Value
Age
< 50 yrs	1.00	Reference group
50–70 yrs	3.67 (1.78 – 7.53)	<0.001
> 70 yrs	4.91 (2.45 – 9.87)	<0.001
Intestinal ischemia	3.47 (2.57 – 4.68)	<0.001
Comorbidity score b
0	1.00	Reference group
1	1.43 (1.02 – 2.00)	0.04
≥2	3.00 (2.25 – 3.98)	<0.001
Secondary diagnosis of bleedingc	2.35 (1.81 – 3.04)	<0.001
Coagulopathy	2.34 (1.50 – 3.65)	<0.001
Hypovolemia	2.22 (1.69 – 2.90)	<0.001
Transfusion of packed red blood cells	1.60 (1.23 – 2.08)	<0.001
Male gender	1.52 (1.21 – 1.92)	<0.001
Colorectal polyp	0.26 (0.15 – 0.45)	<0.001
Hemorrhoids	0.42 (0.28 – 0.64)	<0.001

^aLogistic regression model adjusted for all listed variables.

^bDeyo adaptation of the Charlson Comorbidity Score for use with administrative data ¹⁶.

^cBleeding was not determined at discharge to be the indication for hospital admission