Table 2.
Odds ratios from logistic model
| Odds Ratio | 95% CI | p | |
|---|---|---|---|
| Rural/urban status | |||
| Non-rural | Ref | -- | -- |
| Rural | 1.14 | 1.09 – 1.19 | <0.001 |
| Age | |||
| Younger than 18 | Ref | -- | -- |
| 18–24 | 1.88 | 1.17 – 2.07 | <0.001 |
| 25–34 | 1.81 | 1.64 – 1.99 | <0.001 |
| 35–44 | 1.83 | 1.66 – 2.02 | <0.001 |
| 45–54 | 2.19 | 1.99 – 2.40 | <0.001 |
| 55–64 | 2.79 | 2.54 – 3.07 | <0.001 |
| 65 or older | 6.44 | 5.93 – 7.01 | <0.001 |
| Sex | |||
| Male | Ref | -- | -- |
| Female | 0.66 | 0.64 – 0.68 | <0.001 |
| Trauma Designation | |||
| Level I | 1.34 | 1.24 – 1.45 | <0.001 |
| Level II | 1.84 | 1.74 – 1.95 | <0.001 |
| Level III | 2.34 | 2.23 – 2.45 | <0.001 |
| Level IV/Non-Trauma | Ref | -- | -- |
| Trauma level masked (I or II) | 1.80 | 1.66 – 1.95 | <0.001 |
| Trauma level masked (I, II, or III) | 2.18 | 2.04 – 2.32 | <0.001 |
| ISS | |||
| 1–8 | Ref | -- | -- |
| 9–15 | 26.39 | 25.11 – 27.73 | <0.001 |
| 16–19 | 72.82 | 68.64 – 77.24 | <0.001 |
| 20 or higher | 232.80 | 220.13 – 246.20 | <0.001 |
| Unknown | 5.80 | 5.05 – 6.65 | <0.001 |
| Blunt injury | |||
| No | Ref | -- | -- |
| Yes | 1.05 | 1.00 – 1.10 | 0.063 |
| Penetrating injury | |||
| No | Ref | -- | -- |
| Yes | 4.37 | 4.11 – 4.65 | <0.001 |
| Charlson Comorbidity Index | |||
| 0 | Ref | -- | -- |
| 1 | 1.21 | 1.16 – 1.27 | <0.001 |
| 1 or more | 2.36 | 2.26 – 2.47 | <0.001 |
| Census Region | |||
| Northeast | Ref | -- | -- |
| Midwest | 0.83 | 0.79 – 0.88 | <0.001 |
| South | 1.08 | 1.03 – 1.13 | 0.002 |
| West | 0.99 | 0.94 – 1.05 | 0.828 |