Summary of fitted logistic regression model
| Factor | Odds ratio* | 95% CI* | χ2, p value |
|---|---|---|---|
| *Only shown for factors that were significant at a 5% level. CI, confidence interval. | |||
| Age (years) | 12.21, p = 0.03 | ||
| 0–9 | 1 | – | |
| 10–14 | 1.12 | 0.72 to 1.75 | |
| 15–19 | 0.56 | 0.33 to 0.95 | |
| 20–24 | 0.70 | 0.40 to 1.21 | |
| 25–39 | 0.67 | 0.42 to 1.08 | |
| 40+ | 0.82 | 0.50 to 1.33 | |
| Ethnicity | 6.14, p = 0.01 | ||
| Maori | 1 | – | |
| Non-Maori | 1.67 | 1.12 to 2.51 | |
| ICD/AIS | 14.04, p = 0.01 | ||
| AIS 1 | 1 | – | |
| AIS 2 | 1.15 | 0.81 to 1.65 | |
| AIS 3 | 1.90 | 1.11 to 3.27 | |
| AIS 4+ | 3.15 | 1.40 to 7.68 | |
| AIS 9 | 1.71 | 1.06 to 2.77 | |
| Length of stay (days) | 20.44, p = 0.00 | ||
| 0 | 1 | – | |
| 1 | 1.62 | 0.97 to 2.75 | |
| 2 | 1.66 | 0.95 to 2.93 | |
| 3–4 | 3.16 | 1.74 to 5.83 | |
| 5–7 | 2.48 | 1.33 to 4.66 | |
| 8–14 | 2.86 | 1.51 to 5.49 | |
| 15+ | 2.41 | 1.20 to 4.92 | |
| Region | 29.62, p = 0.10 | ||
| Day injured | 8.18, p = 0.23 | ||