Table 2.
Baseline summary statistics split by trial arm
| Trial arm | |||
|---|---|---|---|
| Variable | Control (n=62) | CBT (n=65) | Total (n=126) |
| Gender: female, n (%) | 44 (71) | 49 (75.4) | 93 (73.2) |
| Age (years) | 58.25 (12.0) | 61.1 (10.5) | 59.2 (11.3) |
| Disease duration (years) | 14.6 (10.6) | 14.2 (11.6) | 14.0 (11.1) |
| Fatigue measures | |||
| Impact, MAF (0−50) | 30.5 (9.3) | 31.0 (9.3) | 30.7 (9.3) |
| Impact, VAS (0–10) | 5.9 (2.7) | 6.3 (2.4) | 6.1 (2.5) |
| Severity, VAS (0–10) | 6.1 (2.5) | 6.5 (2.3) | 6.3 (2.4) |
| Coping, VAS (0–10)* | 6.0 (2.3) | 5.3 (2.4) | 5.7 (2.4) |
| Pain, VAS (0–10) | 4.8 (2.4) | 4.6 (2.5) | 4.0 (2.5) |
| Disease activity, VAS (0–10) | 4.1 (2.5) | 3.8 (2.1) | 4.0 (2.3) |
| Disability, HAQ (0–10) | 1.6 (0.7) | 1.5 (0.6) | 1.6 (0.7) |
| Impact disability, PIHAQ (0–9) | 3.8 (1.9) | 3.8 (1.7) | 3.8 (1.8) |
| Quality of life, RAQoL (0–30) | 17.6 (6.5) | 15.6 (6.6) | 16.6 (6.6) |
| Anxiety, HADS (0–21) | 9.1 (4.8) | 8.3 (4.6) | 8.7 (4.7) |
| Depression, HADS (0–21) | 7.3 (3.9) | 6.9 (3.4) | 7.1 (3.7) |
| Helplessness, AHI (5–30) | 18.8 (5.0) | 17.0 (4.6) | 17.9 (4.8) |
| Self-efficacy, RASE (28–140)* | 103.5 (16.5) | 106.1 (14.1) | 104.8 (15.3) |
| Readiness to change, ASOC (8–40)* | |||
| Pre-contemplation | 18.1 (6.2) | 18.1 (4.7) | 18.1 (5.4) |
| Contemplation | 28.9 (6.8) | 29.0 (5.0) | 29.0 (6.0) |
| Action | 26.7 (7.1) | 28.3 (4.3) | 27.5 (5.8) |
| Maintenance | 25.5 (6.2) | 25.9 (5.1) | 25.7 (5.7) |
| Fatigue change past week, MAF item 16, n (%) | |||
| Decreased | 3 (4.9) | 2 (3.1) | 5 (4.0) |
| Same | 25 (41.0) | 24 (37.5) | 49 (39.2) |
| Up and down | 30 (49.2) | 31 (48.4) | 61 (48.8) |
| Increased | 3 (4.9) | 7 (10.9) | 10 (8) |
| Sleep quality: good, n (%) | 27 (45) | 23 (37.7) | 50 (41.3) |
Except where indicated otherwise, all values are expressed as mean (SD). Except where indicated otherwise, high scores reflect worse health.
*
High scores reflect stronger beliefs.
AHI, Arthritis Helplessness Index; ASOC, Arthritis Stages of Change; MAF, Multi-dimensional Assessment of Fatigue (scale); HADS, Hospital Anxiety and Depression Scale; HAQ, Health Assessment Questionnaire; PIHAQ, Personal Impact HAQ; RAQoL, Rheumatoid Arthritis Quality of Life (instrument); RASE, Rheumatoid Arthritis Self-Efficacy scale; VAS, Visual Analogue Scale.