Table 1.
Baseline patient variables and outcomes
| Psoas:L4 vertebral index | p | |||
|---|---|---|---|---|
| Overall | Low | High | ||
| n = 180 | n = 90 | n = 90 | ||
| Age (yrs)† | 74 (63–82) | 79 (72–85) | 70 (6077) | <0.001 |
| Male* | 103 (57 %) | 39 (43 %) | 64 (71 %) | <0.001 |
| Race* | 0.04 | |||
| Caucasian | 118 (66 %) | 56 (63 %) | 62 (69 %) | |
| African American | 45 (25 %) | 24 (27 %) | 21 (23 %) | |
| Asian | 9 (5 %) | 7 (8 %) | 2 (2 %) | |
| Other | 7 (4 %) | 2 (2 %) | 5 (6 %) | |
| Comorbidities | 3 (2–4) | 3 (1–4) | 3 (2–4) | 0.79 |
| Blunt mechanism | 175 (97 %) | 88 (98 %) | 87 (97 %) | 0.36 |
| ISS | 24 (19–29) | 25 (18–29) | 24 (19–29) | 0.59 |
| AIS head | 3 (0–4) | 4 (2–4) | 3 (0–4) | 0.10 |
| Admission SBP (mmHg) | 137 (117–153) | 138 (12–154) | 135 (110–152) | 0.30 |
| Admission HR | 86 (75–97) | 87 (74–98) | 86 (77–99) | 0.98 |
| Mortality | 23 (13 %) | 14 (16 %) | 9 (10 %) | 0.26 |
| Morbidity* | 127 (71 %) | 75 (83 %) | 52 (58 %) | <0.001 |
| THLOS | 17 (10–26) | 17 (9–24) | 16 (10–29) | 0.52 |
| ICU days | 7 (4–16) | 7 (4–16) | 6 (3–18) | 0.59 |
| Ventilator days | 1 (0–12) | 3 (0–13) | 1 (0–12) | 0.29 |
Bold values indicate significance at p < 0.05
ISS Injury Severity Score, AIS Abbreviated Injury Scale, SBP systolic blood pressure, HR heart rate, THLOS total hospital length of stay, ICU intensive care unit
* χ 2 test statistically significant at p < 0.05
† Result of Mann–Whitney test was statistically significant at p < 0.05