Table 2.

Cox Proportional Hazards Model of Factors Associated with an Emergent Event, Training Sample of Patients^*

N= 46,218	Emergent Event
Factor (Reference Group)	HR	95% CI
Age 70–74 (Age 66–69)	1.02	0.94–1.10
Age 75–80 (Age 66–69)	1.10	1.02–1.18
Age 80+ (Age 66–69)	1.15	1.07–1.24
Male (Female)	1.13	1.07–1.18
Race (White)
Black	0.99	0.90–1.08
Hispanic	0.73	0.62–0.87
Other	0.86	0.74–1.01
Elixhauser score 0 (≥ 3)	1.20	1.12–1.28
Elixhauser score 1 (≥ 3)	1.06	0.99–1.12
Elixhauser score 2 (≥ 3)	1.00	0.94–1.07
Acute Cholecystitis (BC)	2.48	2.36–2.62
Common Bile Duct Stones (BC)	2.92	2.69–3.18
Gallstone Pancreatitis (BC)	6.03	5.52–6.58
ED visit (physician visit)	3.48	3.28–3.69

^*Emergent Event defined as emergency hospitalization and/or cholecystectomy. HR=hazard ratio, CI= confidence interval, BC= biliary colic, ED= emergency department