Table 1.
Characteristics of Patients in the Pre-Intervention and Post-Intervention Periods
| Characteristic | Pre-intervention* | Post-intervention† | p value |
|---|---|---|---|
| N | 60,494 | 24,341 | n/a |
| Mean age, years (SD) | 53.9 (19.1) | 54.5 (18.7) | < 0.001 |
| Age group (%) | < 0.001 | ||
| 18-44 years | 32.8 | 30.5 | |
| 45-64 years | 36.8 | 39.2 | |
| ≥ 65 years | 30.4 | 30.3 | |
| Male (%) | 46.8 | 46.8 | 0.96 |
| Admission service (%) | < 0.001 | ||
| Internal medicine‡ | 50.0 | 51.8 | |
| Other§ | 50.0 | 48.2 |
* Pre-intervention period January 2009 through July 2011
† Post-intervention period November 2011 through October 2012
‡ Internal medicine services included general medicine, cardiology, pulmonary, and renal
§ Other services included general surgery, orthopedics, gynecology, obstetrics, psychiatry, neurology, neurosurgery, urology, vascular surgery, trauma, otolaryngology, burn surgery, plastic surgery, chemical dependency