Baseline characteristics of study population by treatment group
| Patient characteristics and outcomes | Control group (N=60) | Intervention group (N=68) |
|---|---|---|
| Patient characteristics | ||
| Mean age in years (SD) | 56 (13.3) | 54 (12.3) |
| Male (%) | 22 (37%) | 22 (32%) |
| Disease duration in years (SD) | 6.7 (8.9) | 5.2 (4.9) |
| Left school after 16 years of age (%) | 20 (32%) | 15 (21%) |
| Studied since leaving school (%) | 29 (48%) | 25 (37%) |
| Outcomes | Mean (SD) | Mean (SD) |
| ASES (score range) | ||
| ASES-Pain (5–50) | 25 (11.2) | 23 (9.1) |
| ASES-Other symptoms (6–60) | 34 (12.7) | 31 (11.5) |
| AIMS2-SF (score range) | ||
| AIMS2-SF: physical (0–10) | 3.1 (2.59) | 3.1 (2.03) |
| AIMS2-SF: symptoms (0–10) | 5.0 (3.23) | 5.4 (2.64) |
| AIMS2-SF: affect (0–10) | 3.7 (2.13) | 4.3 (2.19) |
| AIMS2-SF: social (0–10) | 5.5 (1.73) | 5.6 (1.75) |
| AIMS2-SF: work* (0–10) | 2.0 (2.69) | 2.3 (3.08) |
| ENAT† (score range)‡ | ||
| Managing pain (0–18) | – | 13.3 (3.68) |
| Movement (0–15) | – | 11.0 (2.88) |
| Feelings (0–12) | – | 7.7 (3.22) |
| Arthritis process (0–21) | – | 16.0 (3.90) |
| Treatments (0–21) | – | 15.4 (4.43) |
| Self-help measures (0–18) | – | 12.6 (4.10) |
| Support (0–12) | – | 7.9 (2.65) |
*Scores are only available for the 59 (26, 33) patients who were working.
†ENAT was used in the intervention group only.
‡ENAT scores are Rasch-transformed values.
AIMS2-SF, short-form of arthritis impact measurement scale (zero=good health status); ASES, Arthritis Self Efficacy Scale (higher score=greater self-efficacy); ENAT, Educational Needs Assessment Tool (zero=no need).