Sociodemographic and disease characteristics of patients
| Variable | FM (n = 69) | CLBP (n = 110) | AS (n = 111) | p Value* |
|---|---|---|---|---|
| *p Value assessed by χ2 test for dichotomous variables and by analysis if variance for continuous variables. | ||||
| †Distinguishes patients who achieved a higher non-university or university degree. | ||||
| ‡After adjusting for age and sex by indirect standardisation with the general Dutch population. | ||||
| §Range 0 to 100, higher values indicating increased wellbeing. | ||||
| AS, ankylosing spondylitis; CLBP, chronic low back pain; FM, fibromyalgia. | ||||
| Male (%) | 13 | 40 | 71 | <0.0001 |
| Age (years) (mean (SD)) | 44.9 (9.4) | 40.9 (8.7) | 47.8 (10.1) | <0.0001 |
| Disease duration (years) (mean (SD)) | 12.4 (14.9) | 10.4 (8.7) | 17.8 (9.2) | <0.0001 |
| Married or living together (%) | 87 | 95 | 94 | 0.148 |
| High educational level† (%) | 4.5 | 0.9 | 9.2 | 0.011 |
| Paid work‡ (%) | 25 | 11 | 56 | <0.0001 |
| Work disability‡ (%) | 31 | 71 | 34 | <0.0001 |
| Full work disability (%) | 74 | 82 | 62 | |
| Global wellbeing score§ (mean (SD)) | 48.2 (14.9) | 42.2 (15.2) | 67.0 (20.0) | <0.0001 |