Table 3.
Comparison between DM, PM, and other patients.
| Domains | Total, n = 510 | DM, n = 238 | PM, n = 212 | Others†, n = 60 | p | |
|---|---|---|---|---|---|---|
| 1 | Muscle symptoms | 3.43 ± 1.88 | 3.34 ± 1.91 | 3.7 ± 1.75 | 2.85 ± 2.04 | 0.005 |
| 2 | Fatigue | 1.89 ± 1.78 | 1.89 ± 1.76 | 1.85 ± 1.81 | 2.02 ± 1.76 | 0.823 |
| 3 | Pain | 1.33 ± 1.83 | 1.39 ± 1.8 | 1.27 ± 1.84 | 1.28 ± 1.97 | 0.752 |
| 4 | Lung symptoms | 1.03 ± 1.78 | 0.83 ± 1.62 | 0.95 ± 1.73 | 2.1 ± 2.18 | < 0.0001 |
| 5 | Skin symptoms | 0.96 ± 1.64 | 1.78 ± 1.95 | 0.25 ± 0.81 | 0.23 ± 0.79 | < 0.0001 |
| 6 | Levels of physical activity | 0.91 ± 1.4 | 0.71 ± 1.23 | 1.11 ± 1.53 | 1 ± 1.45 | 0.009 |
| 7 | Medication side effects | 0.79 ± 1.37 | 0.63 ± 1.21 | 0.96 ± 1.5 | 0.88 ± 1.43 | 0.033 |
| 8 | Dysphagia | 0.7 ± 1.45 | 0.79 ± 1.45 | 0.64 ± 1.45 | 0.58 ± 1.44 | 0.440 |
| 9 | Cognitive impact | 0.56 ± 1.25 | 0.58 ± 1.26 | 0.54 ± 1.22 | 0.58 ± 1.34 | 0.940 |
| 10 | Increased risk of infection | 0.47 ± 1.11 | 0.52 ± 1.17 | 0.38 ± 0.97 | 0.63 ± 1.28 | 0.218 |
| 11 | Joint symptoms | 0.41 ± 1.05 | 0.4 ± 1.06 | 0.4 ± 1.03 | 0.5 ± 1.11 | 0.786 |
| 12 | Difficulty sleeping | 0.4 ± 1.02 | 0.35 ± 0.99 | 0.48 ± 1.09 | 0.33 ± 0.9 | 0.380 |
| 13 | Work ability | 0.32 ± 0.91 | 0.23 ± 0.71 | 0.38 ± 1.01 | 0.45 ± 1.16 | 0.094 |
| 14 | Gastrointestinal tract symptoms | 0.3 ± 0.94 | 0.29 ± 0.99 | 0.34 ± 0.92 | 0.22 ± 0.78 | 0.654 |
| 15 | Emotional distress | 0.29 ± 0.88 | 0.26 ± 0.89 | 0.33 ± 0.9 | 0.23 ± 0.74 | 0.676 |
| 16 | Cardiovascular symptoms | 0.28 ± 0.97 | 0.26 ± 0.91 | 0.35 ± 1.1 | 0.13 ± 0.6 | 0.252 |
| 17 | Interaction* | 0.2 ± 0.82 | 0.18 ± 0.79 | 0.23 ± 0.88 | 0.22 ± 0.72 | 0.774 |
| 18 | Dryness of eyes and/or mouth | 0.18 ± 0.66 | 0.23 ± 0.79 | 0.13 ± 0.5 | 0.17 ± 0.56 | 0.307 |
| 19 | Incontinence | 0.11 ± 0.56 | 0.06 ± 0.43 | 0.18 ± 0.69 | 0.08 ± 0.53 | 0.057 |
| 20 | Relation and/or intimacy | 0.11 ± 0.53 | 0.1 ± 0.49 | 0.12 ± 0.52 | 0.13 ± 0.7 | 0.856 |
| 21 | Leisure activities | 0.09 ± 0.45 | 0.04 ± 0.33 | 0.16 ± 0.56 | 0.07 ± 0.36 | 0.017 |
| 22 | Household activities | 0.09 ± 0.44 | 0.06 ± 0.31 | 0.1 ± 0.45 | 0.18 ± 0.75 | 0.140 |
| 23 | Personal care | 0.07 ± 0.45 | 0.08 ± 0.45 | 0.06 ± 0.45 | 0.08 ± 0.42 | 0.919 |
| 24 | Social gathering | 0.05 ± 0.34 | 0.01 ± 0.13 | 0.09 ± 0.49 | 0.03 ± 0.18 | 0.037 |
Values are mean ± SD.
†
Others included necrotizing autoimmune myopathies and the antisynthetase syndrome patients.
*
Interaction with healthcare personnel and authorities. Values in bold face are statistically significant. DM: dermatomyositis; PM: polymyositis.