Table II.

Predictors of Total ED Charges and Adjusted Odds of Hospital Admission from the ED

Variable	Difference in Total ED Charges ($)	AOR† for admission
Female	88.0 (30.5,145.3)***	1.07 (0.98, 1.17)
Age	6.8 (3.1, 10.5)***	1.00 (0.998, 1.01)
Pneumonia	160.5 (97.4,223.6) ***	16.2 (13.91, 18.74)***
Stroke	573.2 (208.4, 938) ***	5.24 (2.18, 12.61)***
Asthma	34.8 (−49.6, 119.2)	2.67(2.20, 3.24)***
Acute chest	49.8 (−53.7,153.3)	5.74 (3.00, 11.04)***
Crisis	173.6 (86.0,261.2)***	2.86 (2.52,3.23)***
Payor
Medicare	60.2 (−16.8,137.4)	1.00 (0.880,1.15)
Private	57.0 (−50.1,164.2)	1.08 (0.97, 1.21)
Self-Pay	−27.5 (−139.5,84.5)	0.52 (0.44, 0.61)***
Medicaid	Ref	Ref
Region
Northeast	115.5 (−183.7, 414.6)	1.28 (0.98, 1.69)
Midwest	−137.3 (−377.6, 103)	0.99 (0.73,1.35)
West	474.3 (244,704.6)***	1.31 (1.04,1.67)**
South	Ref	Ref
SCD Hospital Volume
0–50	Ref	Ref
51–250	120.9 ((−24.3,266.1)	1.00 (0.84, 1.19)
251–500	46.9 (−189.5,283.4)	0.84 (0.65,1.10)
501+	243.9 (−2.2, 490)*	1.45 (1.02,2.05)****

^†Adjusted Odds Ratio

^****p = .04,

^***p<0.01,

^**p = .02,

^*p = .05