Table 6.

Multivariate analysis of all patients with small bowel volvulus.

	Odds Ratio	95% CI		P-value
		Lower	Higher
Sex
Female	(Reference)
Male	1.17	1.02	1.36	0.029
Race
White	(Reference)
Black	1.14	0.93	1.39	0.197
Hispanic	1.12	0.79	1.57	0.526
Asian or Pacific Islander	0.87	0.39	1.91	0.722
Indian	0.90	0.34	2.40	0.837
Other	1.09	0.71	1.68	0.694
Age
18 – <40	(Reference)
40 – <45	1.61	0.70	3.68	0.263
45 – <50	1.50	0.69	3.27	0.310
50 – <55	2.58	1.36	4.87	0.004
55 – <60	3.38	1.83	6.23	<0.001
60 – <65	4.75	2.60	8.68	<0.001
65 – <70	5.79	3.36	9.99	<0.001
70 – <75	5.60	3.26	9.64	<0.001
75 – <80	7.94	4.75	13.26	<0.001
80 – <85	12.75	7.76	20.97	<0.001
85 – <90	14.62	8.81	24.26	<0.001
≥90	18.23	10.86	30.59	<0.001
Charlson Comorbidity Index
0	(Reference)
1-2	1.59	1.36	1.87	<0.001
≥3	2.34	1.95	2.81	<0.001
Presentation
Elective Admission	(Reference)
Emergent Admission	1.38	1.08	1.76	0.009
Hospital Type
Non-teaching	(Reference)
Teaching	1.09	0.94	1.26	0.254
Rural	(Reference)
Urban	0.96	0.79	1.17	0.698
Management
Non-operative	(Reference)
Operative	0.46	0.39	0.53	<0.001
Year
1998	(Reference)
1999	1.35	0.96	1.90	0.081
2000	0.96	0.67	1.38	0.841
2001	1.12	0.78	1.61	0.532
2002	0.87	0.59	1.29	0.495
2003	0.98	0.68	1.40	0.902
2004	1.08	0.77	1.52	0.646
2005	1.04	0.73	1.47	0.841
2006	0.88	0.62	1.25	0.48
2007	0.88	0.61	1.25	0.470
2008	0.88	0.63	1.22	0.440
2009	0.87	0.62	1.22	0.426
2010	0.92	0.65	1.31	0.654
Presentations of acute abdomen
Peritonitis
No	(Reference)
Yes	2.41	1.74	3.33	<0.001
Acute vascular insufficiency
No	(Reference)
Yes	3.09	2.60	3.67	<0.001
Coagulopathy
No	(Reference)
Yes	6.31	4.29	9.28	<0.001
Pneumoperitoneum
No	(Reference)
Yes	2.32	0.76	7.06	0.139