Table 2.

Result of statistical analysis comparing demographic, clinical and laboratory/ radiological variables (PSI class II ED discharged and class II hospitalized)

Variables	Discharged N = 169 No. (%)	Hospitalized N = 67 No. (%)	OR [95%CI]	p-value
Demographics
Age in years (mean ± sd)	39 ± 5.29	37 ± 8.76	-	-
Gender
Male	66 (39)	12 (18)	2.94 [1.46–5.89]	0.0018
Female	103 (61)	55 (82)
Race
African-American	68 (40)	46 (69)	0.06 [0.04–0.09]	0.0004
Whites	97 (57)	20 (30)
Others	4 (3)	1 (1)
Clinical
Change in mental status	-	-	-	-
Respiratory Rate > 30	-	-	-	-
SBP < 90 mmHg	13 (8)	5 (7)	0.97 [0.33–2.83]	0.9522
Temp >105 F	2 (1)	24 (36)	0.02 [0.01–0.09]	<0.0001
Pulse rate >125	15 (9)	39 (58)	0.07 [0.03–0.14]	<0.0001
Laboratory/ Radiological
Arterial pH < 7.35	11 (7)	8 (12)	0.97 [0.33–2.83]	0.9522
BUN > 30 mg/dL	20 (12)	9 (13)	0.87 [0.37–2.01]	0.7359
Na <130 mmol/L	12 (7)	8 (12)	0.97 [0.33–2.83]	0.9522
Glucose < 250 mg/dL	17 (10)	6 (9)	1.14 [0.43–3.02]	0.7965
Hct < 30%	23 (14)	11 (16)	1.25 [0.57–2.73]	0.5796
pO2 < 60 mmHg/O2sat < 90%	26 (15)	8 (12)	0.75 [0.32–1.74]	0.4969
Social factors
Alcohol-related diagnosis	28 (17)	18 (27)	1.85 [0.94–3.64]	0.0718
Illicit drug use	23 (14)	11 (16)	1.25 [0.57–2.73]	0.5796
Time of ED visit
7am–7pm	101(60)	39 (58)	0.94 [0.53–1.67]	0.8265
7pm–7am	68 (40)	28 (42)
Day of ED visit
Weekdays	142 (86)	55 (83)	0.87 [0.41–1.84]	0.7183
Weekends	27 (14)	12 (17)
Financial Factors
Insurance status
Self pay	63 (37%)	10 (14%)	0.38 [0.19–0.63]	0.0034
Private insurance	88 (52%)	46 (71%)
Medical assistance	18 (11%)	11 (15%)
Utilization of services
Average length of stay	<1 day	3.5 days	-	-
Cost of care (mean ± sd)	$476.02 ±	$3909.32 ±	-	-
	99.25	347.32

(Numbers in parenthesis represent percentages)