Table 1.
Participant characteristics by participant type.
| Measure | Healthy Controls (n=31) |
CLBP (n=45) |
|---|---|---|
| Gender (% female) | 58.1 | 66.7 |
| Race: | ||
| Caucasian | 48.4 | 62.2 |
| African-American | 45.2 | 33.3 |
| Ethnicity: | ||
| Non-Hispanic | 93.5 | 95.6 |
| Age (years) | 33.7±9.61 | 37.9±11.03 |
| VAS Chronic Pain Intensity (0–100) | 54.5±24.27 | |
| Pain Duration (median, in months) | 90.2 |
Note: Summary statistics are presented as percentages or means ( SD). All statistical comparisons across participant types were nonsignificant. CLBP = Chronic Low Back Pain. VAS Chronic Pain Intensity was a retrospective measure of overall past month chronic pain intensity.