Table 4 Observed and risk‐adjusted mortality by unit organisational type.
| Unit type | Died n (%) | Crude mortality | Risk‐adjusted mortality | ||
|---|---|---|---|---|---|
| p Value | OR (95% CI*) | p Value | OR (95% CI*) | ||
| Unit volume type | |||||
| High | 111 (11.7) | Referent category | Referent category | ||
| Medium | 93 (11.2) | 0.73 | 0.95 (0.71 to 1.27) | 0.44 | 1.18 (0.77, 1.8) |
| Low | 65 (8.1) | 0.01 | 0.66 (0.48 to 0.91) | 0.63 | 0.89 (0.56 to 1.41) |
| Unit consultant availability | |||||
| High | 146 (11.1) | Referent category | Referent category | ||
| Low | 123 (9.7) | 0.22 | 0.85 (0.66 to 1.10) | 0.43 | 0.86 (0.6 to 1.24) |
| Unit nursing establishment | |||||
| High | 133 (9.7) | Referent category | Referent category | ||
| Low | 136 (11.3) | 0.19 | 1.18 (0.92 to 1.52) | 0.16 | 1.3 (0.9 to 1.9) |
*The odds ratios and 95% confidence intervals are derived using logistic regression modelling with an odds ratio <1 indicating a decrease in odds relative to high volume/consultant/nursing units.