. Author manuscript; available in PMC: 2022 Jul 1.

Published in final edited form as: Am Surg. 2021 Jan 27;88(2):205–211. doi: 10.1177/0003134820988820

Table 3.

Development of BIS Using Logistic Regression for Early Surgery.^a

	OR (95% CI)	P-value
BIS 1	2.9 (1.5, 5.6)	.002
BIS 2	11.2 (4.3, 29.3)	<.001
BIS 3	38.6 (4.1, 362.7)	<.001
BIS 4	1.0	NA
Age, years	1.4 (.72, 2.68)	.86
WBC ≥12 × 10⁹/L	1.0 (.98, 1.0)	.49
Duration of obstipation >24 hours	2.3 (.22, 23.4)	.07
Prior surgery for SBO	2.5 (.94, 6.5)	.23

Abbreviations: BIS, Bowel Ischemia Score; SBO, small bowel obstruction; WBC, white blood cells.

Early surgical intervention defined as within 6 hours.