Table 1. Subject characteristics.
| Control (n = 39) | Localised Pain (n = 30) | Chronic widespread pain (n = 16) | p-value | |
|---|---|---|---|---|
| Age [years] | 50.5 (25–65) | 50.5 (26–64) | 53.5 (41–64) | 0.219a |
| Weight [kg] | 64 (50–92) | 64 (50–100) | 67 (55–140) | 0.886a |
| BMI [kg × m2] | 23 (18–31) | 24 (19–32) | 24 (21–43) | 0.510a |
| NRS-week | — | 4 (1–8) | 5,5 (2–7) | 0.008*,b |
| NRS-day | — | 3 (1–6) | 3,5 (1–8) | 0.109b |
| Pain duration [months] | — | 25 (5–288) | 204 (60–360) | 0.0001*,b |
| Nicotine users [No.] | 4 (10%) | 5 (17%) | 5 (31%) | 0.102c |
Data with median (range) for all variables and groups apart from the number of nicotine users, which is presented as the number (percent in group). Significant differences between groups are noted with *.
BMI = Body mass index. NRS = numerical rating scale 0–10. Statistical tests, p-value < 0.05 is considered significant. aKruskal-Wallis test, bMann-Whitney-U test, cFisher Exact test.