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.