Table 4.
Results from the logistic regression analysis with odds ratios (OR) and 95% confidence interval for having (i) chronic pain vs. NCP, and (ii) CWP vs. NCP or CRP. The independent variables were all included, and thereby controlled for each other in the analyses
| Chronic pain (n = 773) | CWP (n = 767) | |||
|---|---|---|---|---|
| OR (95% Cl) | p-value | OR (95% Cl) | p-value | |
| Sex | ||||
| Men | 1 | 1 | ||
| Women | 1.91 (1.37–2.67) | ≤0.001 | 1.70 (1.25–2.32) | 0.001 |
| Age | 1.01 (1.00–1.03) | 0.080 | 1.01 (1.0–1.03) | 0.088 |
| Diagnosis | ||||
| AS | 1 | 1 | ||
| USpA | 1.41 (0.99–2.00) | 0.055 | 1.11 (0.80–1.53) | 0.546 |
| Smoking | ||||
| Never | 1 | 1 | ||
| Ever | 1.33 (0.97–1.83) | 0.081 | 1.44 (1.07–1.95) | 0.016 |
| BMI | 1.05 (1.10–1.10) | 0.022 | 1.05 (1.01–1.09) | 0.010 |
| Disease duration | 0.99 (0.97–1.01) | 0.184 | 1.00 (0.98–1.01) | 0.656 |
AS ankylosing spondylitis, USpA undifferentiated spondyloarthritis, NCP no chronic pain, CRP chronic regional pain, CWP chronic widespread pain, BMI body mass index