Table 1.
Demographic and clinical/behavioral data.
| Healthy controls (N = 50) | Low back pain patients (N = 102) | P-valuea | |
|---|---|---|---|
| Age (years) | 41.4 ± 12.3 | 41.2 ± 12.0 | 0.92 |
| Sex (F/M) | 34/16 | 58/44 | 0.17 |
| 2PDT-backb (cm) | 3.37 ± 1.54 | 4.21 ± 1.63 | 0.01** |
| 2PDT-fingerb (mm) | 3.18 ± 1.51 | 3.48 ± 1.37 | 0.29 |
| LBP duration (years) | N/A | 8.6 ± 8.3 | N/A |
| LBP bothersomeness | N/A | 5.4 ± 2.1 | N/A |
| PROMIS-Pain interferencec | 41.6 ± 0.0 | 58.6 ± 5.7 | <0.0001** |
| PROMIS-Physical functionc | 56.4 ± 2.7 | 42.9 ± 5.6 | <0.0001** |
| PROMIS-Anxietyc | 45.9 ± 6.3 | 49.7 ± 8.5 | 0.02* |
| PROMIS-Depressionc | 43.3 ± 5.1 | 45.2 ± 6.3 | 0.12 |
| PROMIS-Fatiguec | 39.9 ± 6.1 | 50.9 ± 9.0 | <0.0001** |
| PROMIS-Sleep disturbancec | 41.3 ± 6.0 | 52.2 ± 8.2 | <0.0001** |
| PROMIS-Social satisfactionc | 69.5 ± 5.1 | 57.2 ± 10.2 | <0.0001** |
| Beck Depression Inventoryc | 1.7 ± 3.6 | 5.4 ± 5.9 | 0.001** |
| Pain Catastrophizing Scalec | 3.2 ± 5.3 | 11.1 ± 8.5 | <0.0001** |
Data are shown as mean ± SD.
*
P < 0.05;
**
P < 0.01.
a
Student’s t-tests were used for the comparison between groups except the comparison for sex distribution, where χ2 test was used.
b
Data available for subset of subjects (HC, N = 34; LBP, N = 100).
c
Data available for subset of subjects (HC, N = 35; LBP, N = 102).