Table 4.
Demographics and injury characteristics of study sample.
| Variables | A-B (n = 24) | SCI-noNP (n = 18) | SCI-LPI (n = 31) | SCI-HPI (n = 19) | ANOVA F or t; P value |
|---|---|---|---|---|---|
| Age | 34.4 ± 8.61 | 36.8 ± 11.03 | 37.5 ± 13.4 | 40.4 ± 11.8 | 0.979; .407 |
| Age at injury | NA | 20.3 ± 7.05 | 26.7 ± 11.8 | 28.2 ± 12.7 | 2.735; .072 |
| Time since injury | NA | 16.2 ± 9.48 | 10.6 ± 9.07 | 12.0 ± 9.85 | 2.056; .136 |
| Sex | Kruskal-Wallis; .855 | ||||
| Female | 5 | 4 | 5 | 5 | |
| Male | 19 | 14 | 26 | 14 | |
| Level of education | χ2 25.336; .116 | ||||
| Less than high school | 0 | 0 | 0 | 1 | |
| High school | 1 | 5 | 10 | 5 | |
| Trade school | 0 | 0 | 1 | 1 | |
| Associate degree or some college | 7 | 7 | 9 | 7 | |
| Bachelor’s degree | 7 | 4 | 8 | 2 | |
| Advanced degree | 9 | 1 | 3 | 2 | |
| Missing data | 0 | 0 | 0 | 1 | |
| Level of injury | NA | Kruskal-Wallis; .216 | |||
| Cervical | 8 | 21 | 13 | ||
| Below cervical | 10 | 10 | 6 | ||
| Completeness of SCI* | NA | Kruskal-Wallis; .080 | |||
| Incomplete | 3 | 14 | 10 | ||
| Complete | 14 | 17 | 9 | ||
| Missing | 1 |
A-B = able-bodied control subjects; NA = not applicable; SCI-HPI = spinal cord injury with high pain impact; SCI-LPI = spinal cord injury with low pain impact; SCI-noN-P = spinal cord injury without neuropathic pain.
*
Neurological completeness as defined by the International Standards for Neurological Classification of Spinal Cord Injury [1].