Table 2 Univariate analysis of the number of diagnostic images ordered and number of images ordered in the first 24 h
Crude RR - All Imaging | Crude RR - Imaging < = 24-h | |||
|---|---|---|---|---|
Characteristic | RR (95 % CI) | p-value | RR (95 % CI) | p-value |
Age | 1.00 (1.00–1.00) | 0.792 | 1.00 (1.00–1.00) | <0.001 |
Sex | ||||
Female | [reference] | -- | [reference] | -- |
Male | 1.09 (1.00–1.19) | 0.061 | 0.99 (0.92–1.05) | 0.637 |
Race | ||||
White | [reference] | -- | [reference] | -- |
Black | 0.88 (0.81–0.95) | 0.002 | 0.91 (0.86–0.97) | 0.002 |
Hispanic | 1.07 (0.86–1.32) | 0.573 | 1.11 (0.95–1.30) | 0.174 |
Other | 1.15 (0.90–1.47) | 0.276 | 0.92 (0.77–1.10) | 0.359 |
Injury Severity Score | 1.08 (1.07–1.08) | <0.001 | 1.04 (1.04–1.04) | <0.001 |
Comorbidities | ||||
None | [reference] | -- | [reference] | -- |
One | 0.89 (0.81–0.99) | 0.027 | 0.91 (0.84–0.98) | 0.009 |
Two | 1.06 (0.94–1.21) | 0.327 | 0.94 (0.86–1.02) | 0.146 |
Three or more | 1.02 (0.68–1.54) | 0.929 | 0.88 (0.65–1.18) | 0.379 |
Complications | 1.52 (1.47–1.57) | <0.001 | 1.17 (1.14–1.21) | <0.001 |
Mechanism | ||||
Penetrating | [reference] | -- | [reference] | -- |
Blunt | 1.57 (1.40–1.77) | <0.001 | 1.93 (1.77–2.10) | <0.001 |
ICU admission | ||||
None | [reference] | -- | [reference] | -- |
One or more days | 3.22 (3.03–3.4) | <0.001 | 1.66 (1.57–1.76) | <0.001 |
Hospital length of stay | 1.05 (1.04–1.05) | <0.001 | 1.01 (1.01–1.02) | <0.001 |
Insurance Type | ||||
Commercial | [reference] | -- | [reference] | -- |
Medicare | 0.78 (0.70–0.87) | <0.001 | 0.70 (0.65–0.76) | <0.001 |
Medicaid | 1.19 (1.01–1.40) | 0.035 | 0.97 (0.86–1.08) | 0.550 |
No Insurance | 0.80 (0.72–0.88) | <0.001 | 0.86 (0.81–0.93) | <0.001 |
Government | 0.63 (0.53–0.74) | <0.001 | 0.75 (0.66–0.85) | <0.001 |