Table 4.
Association Between Hospital Volume and Risk‐Adjusted Mortality
| Annual Hospital Volume of Cardiogenic Shock | ||||
|---|---|---|---|---|
| ≤27 Cases | 28 to 58 Cases | 59 to 106 Cases | ≥107 Cases | |
| No. of hospitals, % | 2046 (76.49) | 366 (13.68) | 177 (6.62) | 86 (3.21) |
| Odds ratio, 95% CI | ||||
| Unadjusted model | 1.58 (1.45 to 1.73) | 1.29 (1.17 to 1.41) | 1.17 (1.06 to 1.29) | 1.00 [Reference] |
| Multivariate model* | 1.27 (1.15 to 1.40) | 1.20 (1.08 to 1.32) | 1.12 (1.01 to 1.24) | 1.00 [Reference] |
| Mortality incidence, 95% CI | ||||
| Unadjusted model | 45.32 (44.53 to 46.11) | 40.27 (39.25 to 41.29) | 37.96 (36.66 to 39.28) | 34.40 (32.53 to 36.32) |
| Multivariate model* | 41.97 (40.87 to 43.08) | 40.72 (39.52 to 41.93) | 39.31 (37.91 to 40.72) | 37.01 (35.11 to 38.96) |
MI indicates myocardial infarction.
Adjusted for age group, sex, race, acute MI, early revascularization, hemodialysis, teaching status of the hospital, hospital region, median household income for the patient's ZIP code, mechanical ventilation, valvular disease, pulmonary circulation disease, peripheral vascular disease, hypertension, paralysis, neurological disorders, chronic pulmonary disease, diabetes with and without chronic complications, hypothyroidism, renal failure, liver disease, peptic ulcer disease, AIDS, lymphoma, metastatic cancer, solid tumor without metastasis, rheumatoid arthritis, coagulopathy, obesity, weight loss, fluid and electrolyte disorders, chronic blood loss anemia, deficiency anemias, alcohol abuse, drug abuse, psychoses, depression.