Table 1.
Hospital Sample and Results
| AMI | HF | Pneumonia | |
|---|---|---|---|
| Number of Hospitals | 3,135 | 4,209 | 4,498 |
| Total Admissions (2004–2006) | 718,508 | 1,315,845 | 1,415,237 |
| Volume | |||
| Mean (SD) | 229.9 (242.1) | 312.6 (318.0) | 314.6 (276.3) |
| Median | 147 | 204 | 233 |
| Range | 30-2,291 | 30-3,669 | 30-3,913 |
| Hospital transfer-out rates | |||
| Mean (SD) | 10.4 (14.6) | 1.3 (1.7) | 0.7 (1.3) |
| Range | 0–80.6 | 0–19.4 | 0–52.5 |
| LOS (days) | |||
| Mean (SD) | 7.1 (1.5) | 6.8 (1.1) | 7.1 (1.2) |
| Range | 2.3–13.7 | 3.5–11.9 | 3.8–14.8 |
| In-hospital RSMR (%) | |||
| Mean (SD) | 10.8 (1.8) | 5.2 (1.2) | 6.4 (1.9) |
| Range | 6.5–19.3 | 2.4–12.3 | 2.5–23.1 |
| 30-day RSMR (%) | |||
| Mean (SD) | 16.1 (1.8) | 11.2 (1.7) | 12.2 (2.1) |
| Range | 10.8–23.5 | 5.8–19.7 | 6.9–28.4 |
| Percentage of hospital deaths within 30 days occurring post discharge | |||
| Mean (SD) | 34.2 (12.4) | 54.9 (13.1) | 50.3 (13.6) |
| IQR | 25.7–41.7 | 47.4–63.3 | 41.9–58.6 |
| (30-day RSMR[%]) – (In-hospital RSMR [%]) | |||
| Mean (SD) | 5.3 (1.3) | 6.0 (1.3) | 5.7 (1.4) |
| Range | 1.3–11.0 | 1.4–11.2 | (−)0.4–12.1 |
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Abbreviations: acute myocardial infarction (AMI); heart failure (HF); length of stay (LOS); IQR (inter-quartile range) risk-standardized mortality rate (RSMR); standard deviation (SD)