Table 4.
Adjusted Odds (95% Confidence Interval) of Mortality at Discharge among Older Adults Treated for Traumatic Brain Injury at a Level 1 Trauma Center 1996–2012, n=4,854
| Odds Ratio (95% CI) | |
|---|---|
| Female sex | 0.73 (0.59, 0.89) |
| Age | 1.07 (1.06, 1.09) |
| Admission year | 0.94 (0.92, 0.96) |
| AIS1 head score | |
| 1 | reference |
| 2 | 1.81 (0.77, 4.22) |
| 3 | 1.10 (0.69, 1.74) |
| 4 | 1.12 (0.68, 1.85) |
| ≥5 | 3.99 (2.21, 7.22) |
| Glasgow Coma Scale score | |
| 14–15 | reference |
| 9–13 | 3.37 (2.60, 4.37) |
| <9 | 15.44 (11.98, 19.90) |
| Injury Severity Score | |
| <10 | reference |
| 10–15 | 3.90 (2.0, 7.61) |
| 16–25 | 5.91 (3.04, 11.49) |
| >25 | 11.18 (4.97, 25.13) |
| Severity of other injuries | |
| No other injury (AIS1 = 0) | reference |
| Mild (AIS1 = 1,2) | 0.59 (0.41, 0.85) |
| Moderate/severe (AIS1 >2) | 0.53 (0.31, 0.89) |
| Cardiac arrhythmia | 1.94 (1.32, 2.83) |
| Admission systolic blood pressure | |
| < 90 mmHg | reference |
| 90 –<120 mmHg | 0.49 (0.29, 0.84) |
| 120 – <140 mmHg | 0.42 (0.25, 0.70) |
| 140 – <160 mmHg | 0.28 (0.17, 0.47) |
| 160 – <180 mmHg | 0.25 (0.15, 0.41) |
| ≥180 mmHg | 0.32 (0.20, 0.53) |
| AIS1 face score | |
| 0 | Reference |
| 1 | 1.22 (0.93, 1.60) |
| 2 | 0.64 (0.43, 0.95) |
| 3 | 1.08 (0.59, 1.97) |
| AIS1 spine score | |
| 0 | reference |
| 1 | 0.41 (0.10, 1.69) |
| 2 | 1.35 (0.98, 1.88) |
| 3 | 2.46 (1.45, 4.16) |
| ≥4 | 3.18 (1.68, 6.03) |
| AIS1 thorax score | |
| 0 | reference |
| 1 | 2.13 (1.28, 3.56) |
| 2 | 1.11 (0.69, 1.81) |
| 3 | 1.02 (0.66, 1.58) |
| ≥4 | 1.46 (0.86, 2.47) |
| AIS1 abdominal score | |
| 0 | reference |
| 1 | 1.46 (1.01, 2.20) |
| 2 | 1.26 (0.76, 2.06) |
| 3 | 2.75 (1.27, 5.96) |
| ≥4 | 5.72 (2.47, 13.21) |
| AIS1 upper extremity score | |
| 0 | reference |
| 1 | 1.17 (0.88, 1.56) |
| 2 | 1.70 (1.19, 2.44) |
| 3 | 0.82 (0.48, 1.38) |
| Transport to trauma center | |
| Directly from scene | reference |
| Transfer from another hospital | 0.47 (0.37, 0.59) |
1
Abbreviated Injury Scale