Table 8. Comparison of spine injury characteristics using the SF-12 MCS and its associated univariate analysis.
| Spine injury characteristics | MCS < 50 (n = 193) | MCS ≥ 50 (n = 286) | Odds ratio; 95% CI | p value |
|---|---|---|---|---|
| Neurologic status | ||||
| Intact | 179 (92.7%) | 266 (93%) | – | – |
| NRI only | 10 (5.2%) | 7 (2.4%) | 1.25; 0.85–1.83 | 0.26 |
| SCI | 4 (2.1%) | 13 (4.5%) | – | – |
| ASIA D | 3 (1.6%) | 11 (3.8%) | – | – |
| ASIA A, B, and C | 1 (0.5%) | 2 (0.7%) | – | – |
| Injury levels per patient | ||||
| 1 | 74 (38.3%) | 110 (38.5%) | – | – |
| 2 | 38 (19.7%) | 76 (26.6%) | – | – |
| 3 | 26 (13.5%) | 43 (15%) | – | – |
| 4 | 17 (8.8%) | 24 (8.4%) | 1.05; 0.55–2.02 | 0.87 |
| 5 or more | 38 (19.7%) | 33 (11.5%) | 1.88; 1.13–3.12 | 0.01 |
| Total injury levels | 482 | 619 | – | – |
| Spine injury by segments | ||||
| C0–C2 | 20 (4.1%) | 52 (8.4%) | – | – |
| C3–C7 | 106 (22%) | 129 (20.8%) | 1.07; 0.80–1.43 | 0.64 |
| T1–T12 | 205 (42.5%) | 217 (35.1%) | 1.37; 1.07–1.75 | 0.01 |
| L1–L5 | 141 (29.3%) | 205 (33.1%) | – | – |
| Sacrococcygeal | 10 (2.1%) | 16 (2.6%) | – | – |
Abbreviations: ASIA, American Spinal Injury Association classification of spinal cord injury; CI, confidence interval; MCS, Mental Composite Score; NRI, nerve root injury; SCI, spinal cord injury; SF-12, Short Form 12-Questionnaire Health Survey.
Note: Variables in bold demonstrate trend toward suboptimal SF-12 MCS scores.