Systematic variation (SV) and range of risk adjusted observed/expected (O/E) event ratios for diagnosis-outcome indicators*
| Diagnosis | Outcome | |||
|---|---|---|---|---|
| 30 day in-hospital mortality | Long stays | 30 day all cause readmissions | 30 day same diagnosis readmissions | |
| *Results for all hospital analysis. Systematic variation (SV) was regarded as significant if the 95% confidence interval (CI) excluded zero to three decimal places. Range of risk adjusted O/E event ratios apply only to those hospitals where expected number of outcome events for 1 year was ⩾5. | ||||
| AMI = acute myocardial infarction; NA = not applicable as no individual facility had outcome events which numbered ⩾5. | ||||
| Heart failure | ||||
| SV | 0.067 | 0.176* | 0.008 | 0.068* |
| 95% CI | 0.000 to 0.204 | 0.071 to 0.354 | 0.000 to 0.031 | 0.013 to 0.172 |
| O/E ratio | 0.89–1.22 | 0.35–2.00 | 0.81–1.18 | 0.54–1.87 |
| AMI | ||||
| SV | 0.122* | 0.114 | 0.002 | 0.135* |
| 95% CI | 0.049 to 0.260 | 0.000 to 0.384 | 0.000 to 0.051 | 0.039 to 0.347) |
| O/E ratio | 0.63–1.99 | 0.79–1.13 | 0.95–1.05 | 0.81–1.33 |
| Stroke | ||||
| SV | 0.048* | 0.012 | 0.031 | 0.122 |
| 95% CI | 0.004 to 0.132 | 0.000 to 0.130 | 0.000 to 0.147 | 0.000 to 0.626 |
| O/E ratio | 0.74–1.58 | 0.64–1.34 | 0.83–1.27 | NA |