Table 3.

Multivariate Logistic Regression Modeling the Odds of Cholecystectomy During Initial Hospitalization

Factor (reference group)	Odds Ratio	95% Confidence Interval
Age (5-yr increments)	0.83	0.81 – 0.84
African American race (white)	0.68	0.60 – 0.76
Female (male)	0.94	0.88 – 0.99
CBD stones (no stones)	0.32	0.30 – 0.34
Emergency admission (urgent)	0.91	0.86 – 0.97
<200 beds (>500 beds)	0.85	0.77 – 0.94
200–350 beds (>500 beds)	1.10	1.00 – 1.21
351–500 beds (>500 beds)	1.12	1.01 – 1.24
Medical service area <100,000 (>1,000,000)	0.85	0.77 – 0.94
Major teaching hospital (non)	0.77	0.70 – 0.84
Non-profit hospital (government)	1.24	1.34 – 1.35
Profit (government)	1.21	1.07 – 1.35
Admitting physician – medicine (surgeon)	0.52	0.48 – 0.56
Gastroenterology evaluation (no)	0.57	0.51 – 0.65
Congestive heart failure (no)	0.64	0.59 – 0.70
Valvular disease (no)	0.83	0.74 – 0.93
Peripheral vascular disease (no)	0.79	0.72 – 0.86
Other neurologic disease (no)	0.84	0.75 – 0.94
Chronic pulmonary disease (no)	0.80	0.74 – 0.86
Liver disease (no)	0.44	0.33 – 0.58
Metastatic Cancer (no)	0.57	0.44 – 0.74
Coagulopathy (no)	0.77	0.66 – 0.90
Electrolyte abnormality (no)	0.80	0.73 – 0.87

^*Individual Federal Information Processing Standards areas also significant, but not shown listed individually.