Table 1.
Baseline demographic and clinical data
| cLBP (n=127) | HC (n=54) | p-value | |
|---|---|---|---|
| Age (years) | 39.3±11.8 | 39.5±11.2 | 0.92 |
| Sex (male/female) | 55/72 | 25/29 | 0.75(1) |
| Pain duration (years) | 7.6±7.0 | N/A | - |
| % using opioids | 7.8 | 0 | < 0.001 |
| BDI | 6.6±6.9 | 2.5±4.2 | < 0.001 |
| BPSD(2) | 8.6±4.5 | N/A | - |
| PROMIS-Physical function(2) | 42.3±5.1 | 56.3±2.8 | < 0.001 |
| PROMIS-Pain interference(2) | 59.3±5.8 | 41.6±0.0 | < 0.001 |
| PCS(2) | 12.5±8.8 | 4.1±6.0 | < 0.001 |
| Back pain bothersomeness(2) | 5.1±2.0 | N/A | - |
BDI Beck Depression Inventory II (0–63 scale), BPSD Back Pain Specific Disability (0–10 scale), PROMIS Patient-Reported Outcomes Measurement Information System, PCS Pain Catastrophizing, Back pain bothersomeness (0–10 scale).
(1)
Pearson Chi-Square test (2-sided, 0 cells have expected count less than 5)
(2)
data available for large subset of subjects (cLBP: n=114, HC: n=36)