Table 1.
Background data.
| Variables | CON (n = 31) | FM (n = 30) | p value* |
|---|---|---|---|
| Median (interquartile range) | Median (interquartile range) | ||
| Age (years) | 57 (9) | 54 (13) | 0.366 |
| BMI (kg/m2) | 24 (3) | 26 (6) | < 0.05 |
| FM duration (years) | – | 12 (14) | – |
| Tender points (number) | – | 16 (2) | – |
| Pain intensity (VAS) | 0 (2) | 50 (36) | < 0.001 |
| PPT all sites (kPa) | 340 (146) | 175 (88) | < 0.001 |
| FIQ total | 2 (8) | 58 (24) | < 0.001 |
| HADS total (psychological distress) | 3 (5) | 13 (14) | < 0.001 |
FM Fibromyalgia, CON controls, BMI body mass index, VAS visual analogue scale, PPT pressure pain thresholds, FIQ fibromyalgia impact questionnaire, HADS Hospital Anxiety and Depression Scale.
*Mann Whitney-U statistical test was used for all variables.