Table 4.
Variable | Odds Ratio | 95% Confidence Limits | p value |
---|---|---|---|
Year | |||
2003 | ref. | ||
2004 | 1.08 | 1.03 - 1.12 | 0.0005 |
2005 | 1.19 | 1.14 - 1.23 | <.0001 |
2006 | 1.28 | 1.23 - 1.33 | <.0001 |
Hospital Level Variables | |||
Urban Hospital | ref. | ||
Rural Hospital | 1.84 | 1.37 - 2.47 | <.0001 |
Non-Teaching Hospital | ref. | ||
Teaching | 1.03 | 0.95 - 1.13 | NS |
Annual ED Visits | |||
<30,603 | ref. | ||
30,603-40,599 | 0.99 | 0.89 - 1.09 | NS |
40,600-51,270 | 1.10 | 0.98 - 1.25 | NS |
>51,270 | 1.05 | 0.91 - 1.21 | NS |
Encounter Level Variables | |||
Female | 1.06 | 1.03 - 1.09 | <.0001 |
Age | |||
65-74 | ref. | ||
18-45 | 1.00 | 0.94 - 1.05 | NS |
46-64 | 1.01 | 0.97 - 1.06 | NS |
75+ | 0.96 | 0.92 - 0.99 | 0.0066 |
Primary Payer | |||
Private Insurance/HMO | ref. | ||
Medicaid | 0.98 | 0.93 -1.02 | S |
No Insurance | 1.23 | 1.16 -1.30 | <.0001 |
Medicare Age < 65 | 0.99 | 0.94 -1.05 | NS |
Elixhauser Co-Morbidities | |||
Fluid and Electrolyte Disorder | 1.05 | 1.02 -1.07 | 0.0010 |
Diabetes | 1.12 | 1.09 - 1.16 | <.0001 |
Coagulopathy | 1.07 | 1.03 - 1.11 | 0.0002 |
Drug Abuse | 1.37 | 1.30 - 1.45 | <.0001 |
Paralysis | 0.94 | 0.89 - 0.99 | 0.0263 |
Liver Disease | 0.93 | 0.88 - 0.97 | 0.0023 |
Congestive Heart Failure | 0.92 | 0.89 - 0.95 | <.0001 |
Metastatic Cancer | 0.91 | 0.85 - 0.97 | 0.0052 |
Diabetes w/Chronic Complications | 0.91 | 0.86 - 0.96 | 0.0002 |
Solid Tumor | 0.97 | 0.90 - 1.06 | NS |
Obesity | 1.01 | 0.96 - 1.07 | NS |
Alcohol Abuse | 1.02 | 0.97 - 1.07 | NS |
Renal Failure | 1.00 | 0.96 - 1.04 | NS |
Chronic Lung Disease | 1.00 | 0.97 - 1.03 | NS |