Table 1.
Characteristics of 28 PM/DM patients.
| Value | |
|---|---|
| Age, years, median (range) | 57 (28–74) |
| Sex, female/male, n | 15/13 |
| Diagnosis, PM/DM, n | 11/17 |
| Disease duration, years, median (range) | 9 (1–32) |
| Educational level, n (%) | |
| (i) Low | 14 (50) |
| (ii) High | 14 (50) |
| Employment status, n | |
| (i) Part-time/full-time job | 18 |
| (ii) Retired | 7 |
| (iii) Sick-leave | 3 |
| MYOACT Global, VAS, 0–100 mm | 1 (0–5)b |
| MYOACT Extra, VAS, 0–100 mm | 0 (0–6)c |
| MDI Global VAS, 0–100 mm | 18 (8–23)c |
| CPK, μcat/l | 1.8 (1.3–2.6)b |
| FI-2, mean (0–100%) | 49 (27–56)b |
| MMT-8, 0–80 | 77 (72–80)b |
| MAP, 1–7 | 3 (2–4) |
| HAQ, 0–3.00 | 0.50 (0.13–1.00)a |
| MACTAR, 19–39 | 27 (23–29) |
| PGA, VAS, 0–100 mm | 44 (26–59)d |
Values are median (quartiles) unless otherwise indicated. aOne missing case; btwo missing cases: cthree missing cases; done case excluded. Low educational level; up to and including vocational training, and high educational level: higher vocational and/or university education. MACTAR: MacMaster Toronto Arthritis Patient Preference Disability Questionnaire, MAP: Myositis Activities Profile, FI-2: Functional Index 2, VAS: Visual Analogue Scale, PGA: patients' assessment of disease impact on well-being, HAQ: Health Assessment Questionnaire, MYOACT Global: physician's assessment of global disease activity, MYOACT Extra: physician's assessment of global extra skeletal muscle disease activity, MDI Global: myositis damage index global, MMT-8: Manuel Muscle Test-in 8 muscle groups, and CPK: Serum levels of creatine phosphokinase micro cat/litre.