Predictors of having a blood alcohol test following admission to any hospital for a major trauma injury event
| OR (95% CI) | P value* | aOR (95% CI) | P value* | ||
| Age (years) | 18 to 34 | 1.00 | <0.001 | 1.00 | <0.001 |
| 35 to 64 | 0.78 (0.71 to 0.85) | 0.98 (0.85 to 1.12) | |||
| ≥65 | 0.26 (0.23 to 0.28) | 0.57 (0.48 to 0.68) | |||
| Sex | Male | 1.00 | <0.001 | 1.00 | 0.101 |
| Female | 0.60 (0.55 to 0.65) | 0.90 (0.79 to 1.02) | |||
| IRSAD quintile | 5, least disadvantaged | 1.00 | <0.001 | 1.00 | 0.003 |
| 4 | 0.75 (0.68 to 0.84) | 1.34 (1.13 to 1.58) | |||
| 3 | 0.66 (0.59 to 0.74) | 1.30 (1.10 to 1.53) | |||
| 2 | 0.61 (0.55 to 0.68) | 1.13 (0.95 to 1.34) | |||
| 1, most disadvantaged | 0.61 (0.55 to 0.68) | 1.25 (1.06 to 1.47) | |||
| Preferred language | English | 1.00 | <0.001 | 1.00 | <0.001 |
| Language other than English | 0.43 (0.37 to 0.50) | 0.65 (0.52 to 0.81) | |||
| Pre-existing mental health condition | No | 1.00 | <0.001 | 1.00 | 0.028 |
| Yes | 1.35 (1.23 to 1.48) | 1.18 (1.02 to 1.37) | |||
| Pre-existing substance use condition | No | 1.00 | <0.001 | 1.00 | <0.001 |
| Yes | 3.19 (2.83 to 3.59) | 4.10 (3.44 to 4.89) | |||
| Smoking status | Non-smoker | 1.00 | <0.001 | 1.00 | <0.001 |
| Past smoker | 0.97 (0.87 to 1.09) | 1.20 (1.01 to 1.43) | |||
| Current smoker | 2.21 (2.03 to 2.41) | 1.33 (1.16 to 1.52) | |||
| Site of first admission* | Major trauma centre 1 | 1.00 | <0.001 | 1.00 | <0.001 |
| Major trauma centre 2 | 0.08 (0.07 to 0.09) | 0.05 (0.04 to 0.06) | |||
| Metropolitan trauma services | 0.01 (0.01 to 0.02) | 0.01 (0.01 to 0.02) | |||
| Regional trauma services | 0.01 (0.01 to 0.02) | 0.01 (0.01 to 0.01) | |||
| Other | 0.02 (0.01 to 0.02) | 0.02 (0.01 to 0.02) | |||
| High alcohol hours | No | 1.00 | <0.001 | 1.00 | <0.001 |
| Yes | 2.03 (1.80 to 2.29) | 1.90 (1.59 to 2.27) | |||
| Cause of injury | Motor vehicle/motorcycle collision (drivers) | 1.00 | <0.001 | 1.00 | <0.001 |
| Motor vehicle/motorcycle collision (passengers) | 0.94 (0.79 to 1.12) | 0.90 (0.70 to 1.16) | |||
| Other transport-related causes | 0.68 (0.60 to 0.77) | 0.60 (0.50 to 0.72) | |||
| Low falls | 0.19 (0.17 to 0.22) | 0.37 (0.31 to 0.44) | |||
| High falls | 0.68 (0.60 to 0.77) | 0.65 (0.55 to 0.78) | |||
| Flames/scalds/contact burns | 1.55 (1.16 to 2.09) | 0.36 (0.23 to 0.57) | |||
| Animal-related | 0.24 (0.19 to 0.32) | 0.31 (0.21 to 0.45) | |||
| Struck by or collided with an object or person | 0.57 (0.49 to 0.67) | 0.41 (0.30 to 0.55) | |||
| Cutting/piercing object | 0.91 (0.75 to 1.09) | 0.31 (0.22 to 0.43) | |||
| Other/unspecified | 0.85 (0.69 to 1.04) | 0.52 (0.38 to 0.72) | |||
| Injury intent | Unintentional | 1.00 | <0.001 | 1.00 | <0.001 |
| Intentional self-harm | 3.07 (2.59 to 3.64) | 1.93 (1.45 to 2.57) | |||
| Interpersonal violence | 2.04 (1.78 to 2.33) | 2.29 (1.70 to 3.09) | |||
| Could not be determined | 2.34 (1.82 to 3.01) | 1.23 (0.81 to 1.87) | |||
| Other/unspecified | 2.06 (0.98 to 4.34) | 2.00 (0.74 to 5.43) | |||
| Injury severity (ISS) | Minor/moderate (ISS<16) | 1.00 | <0.001 | 1.00 | 0.105 |
| Severe (ISS 16–24) | 1.28 (1.18 to 1.39) | 1.14 (1.01 to 1.29) | |||
| Very severe (ISS>24) | 1.68 (1.53 to 1.83) | 1.08 (0.94 to 1.24) | |||
| GCS | 13–15 | 1.00 | <0.001 | 1.00 | <0.001 |
| 9–12 | 2.20 (1.89 to 2.55) | 1.93 (1.55 to 2.40) | |||
| 3–8 | 2.73 (2.42 to 3.08) | 1.70 (1.41 to 2.06) |
Values in bold font indicate statistically significant results.
*P values were derived using likelihood ratio tests.
aOR, adjusted OR; GCS, Glasgow Coma Scale; IRSAD, Index of Relative Socioeconomic Advantage and Disadvantage; ISS, Injury Severity Score.