Table 1.
Characteristics of CIREN occupants with CT-indicated sarcopenia versus normal muscle mass (non-sarcopenic). Mean ± standard error is reported, unless otherwise noted. P-values were computed using t-tests for continuous variables and chi-squared tests for categorical variables.
| CT-indicated Sarcopenia | Non-sarcopenic | p-value | |
|---|---|---|---|
| N (%) | 26 (43%) | 35 (57%) | -- |
| Age, years | 68 ± 2 | 63 ± 9 | 0.088 |
| >60 years old, n (%) | 19 (45%) | 23 (55%) | -- |
| >80 years old, n (%) | 4 (80%) | 1 (20%) | -- |
| Female, n (%) | 15 (58%) | 25 (71%) | 0.265 |
| Crash speed, km/hr | 31.0 ± 2.3 | 35.7 ± 3.2 | 0.242 |
| Crash mode, n (%) Frontal | 15 (58%) | 21 (60%) | 0.857 |
| Near side | 7 (27%) | 11 (31%) | |
| Far side | 3 (12%) | 2 (6%) | |
| SMI (cm2/m2) Male | 46.0 ± 1.1 | 63.1 ± 2.8 | <0.001* |
| Female | 34.3 ± 0.8 | 49.0 ± 1.6 | <0.001* |
| Lumbar BMD, mg/cc | 163.7 ± 8.1 | 184.3 ± 6.2 | 0.049* |
| Osteopenic, n (%) | 9 (35%) | 6 (17%) | 0.118 |
| Injury Severity Score (ISS) | 20.8 ± 1.7 | 21.7 ± 1.8 | 0.730 |
| Number of Fractures | 7.4 ± 1.2 | 9.1 ± 1.1 | 0.281 |
| Chest | 4.4 ± 1.0 | 4.2 ± 0.8 | 0.878 |
| Spine | 1.2 ± 0.3 | 2.1 ± 0.6 | 0.176 |
| Upper Extremity | 0.5 ± 0.2 | 0.4 ± 0.1 | 0.629 |
| Pelvis/Lower Extremity | 1.1 ± 0.2 | 2.2 ± 0.4 | 0.027* |