Table 1.
Patient-related characteristics (n = 281)
| Variables | Categories/range | Comparison group (n = 158) |
Intervention group (n = 123) |
P a |
|---|---|---|---|---|
| Sociodemographic variables | ||||
| Age, years | 54 ± 15 (158) | 55 ± 13 (123) | n.s.b | |
| Gender, % (n) | Women | 65 % (102) | 61 % (75) | |
| Men | 35 % (56) | 39 % (48) | n.s. | |
| Marital status, % (n) | Married/living with partner | 78 % (121) | 89 % (109) | |
| Not married/living alone | 22 % (34) | 11 % (14) | 0.02 | |
| Education, % (n) | Low | 26 % (41) | 30 % (37) | |
| Medium | 52 % (81) | 50 % (61) | ||
| High | 22 % (34) | 20 % (25) | n.s. | |
| Work status, % (n) | Employed/studying | 67 % (82) | 67 % (58) | |
| Not employed/not studying | 33 % (41) | 33 % (29) | n.s. | |
| Health-related variables | ||||
| Diagnosis, % (n) | Rheumatoid arthritis | 76 % (108) | 81 % (91) | |
| Psoriatic arthritis | 19 % (27) | 13 % (15) | ||
| Ankylosing spondylitis | 5 % (7) | 6 % (7) | n.s. | |
| Years since diagnosis, % (n) | <1 | 37 % (58) | 25 % (31) | |
| 1–5 | 34 % (52) | 41 % (50) | ||
| 6–10 | 10 % (16) | 12 % (14) | ||
| >10 | 19 % (29) | 22 % (27) | n.s. | |
| Pain (NRS) | Range 0–10 | 4.7 ± 2,4 (158) | 4.7 ± 2,5 (123) | n.s.b |
| Physical function (HAQ-II) | range 0–3 | 2.17 ± 0.57 (155) | 2.13 ± 0.57 (120) | n.s.b |
| Preference-related variables | ||||
| Preferred role in decision-making (CPS), % (n) | (Mostly) doctor | 15 % (23) | 8 % (10) | |
| Shared | 76 % (119) | 77 % (94) | ||
| (Mostly) patient | 9 % (14) | 15 % (18) | n.s. | |
| Need for information (CPQ) | range 1–5 | 4.4 ± 0.8 (154) | 4.5 ± 0.7 (121) | n.s.b |
Values are the mean ± standard deviation (number) unless otherwise indicated. Percentages do not include missing cases. aTested using the Pearson chi-square test unless otherwise indicated. bTested using the t test. n.s. not significant (p > 0.05), NRS numerical rating scale, HAQ-II Health Assessment Questionnaire, version 2 [28], CPS Control Preference Scale [5, 29], CPQ Cologne Preference Questionnaire [30, 31]