Table 4.
The effect of socio-economic status on hospital admission rates for surgical DRGs
| MDC | Quintile 1:quintile 2 | Quintile 5: quintile 4 | |||
| Rate ratio | 95% CI | Rate ratio | 95% CI | ||
| 1 | Nervous | 0.99 | (0.95 – 1.03) | 0.92 | (0.88–0.96) |
| 2 | Eye | 0.90 | (0.88 – 0.93) | 1.09 | (1.06–1.13) |
| 3 | ENTM | 0.91 | (0.88 – 0.94) | 1.02 | (0.98–1.05) |
| 4 | Respiratory* | 1.09 | (1.04 – 1.14) | 1.03 | (0.97–1.09) |
| 5 | Circulatory | 0.95 | (0.91 – 0.98) | 0.96 | (0.93–1.00) |
| 6 | Digestive | 0.90 | (0.87 – 0.94) | 1.01 | (0.98–1.05) |
| 7 | Pancreas† | 1.01 | (0.97 – 1.05) | 0.97 | (0.92–1.02) |
| 8 | Musculoskeletal | 0.89 | (0.86 – 0.92) | 1.04 | (1.01–1.08) |
| 9 | Skin | 0.88 | (0.84 – 0.92) | 1.08 | (1.03–1.13) |
| 10 | Endocrine† | 0.94 | (0.88 – 1.01) | 1.07 | (1.00–1.14) |
| 11 | Kidney*† | 1.14 | (1.06 – 1.23) | 0.86 | (0.78–0.94) |
| 12 | Male repro† | 0.95 | (0.89 – 1.02) | 1.06 | (0.98–1.13) |
| 13 | Female repro† | 0.97 | (0.92 – 1.03) | 1.00 | (0.94–1.05) |
| 16 | Blood* | 0.97 | (0.91 – 1.03) | 0.95 | (0.89–1.02) |
| 17 | Neoplastic* | 0.90 | (0.85 – 0.96) | 1.17 | (1.10–1.25) |
| 21 | Injuries* | 1.07 | (1.02 – 1.11) | 0.97 | (0.92–1.03) |
| 22 | Burns* | 1.16 | (1.07 – 1.26) | 0.85 | (0.78–0.92) |
| Total | 0.92 | (0.89 – 0.95) | 1.02 | (0.99–1.06) | |
Bold text denotes over or underservicing
* questionable convergence of poisson model
† restricted subgroups to allow model convergence