Table 1. Characteristics of patients with myositis-associated ILD.
| Total | PM-ILD | DM-ILD | CADM-ILD | |
| Number of patients | 114 | 30 | 41 | 43 |
| Age, yrs | 56 (49, 65) | 54.5 (48, 62) | 59 (51.5, 67.5) | 56 (49, 64) |
| Sex, female | 75 (65.8) | 15 (50.0) | 28 (68.3) | 32 (74.4) |
| Time of ILD onset | ||||
| Before PM/DM/CADM onset | 22 (19.3) | 4 (13.3) | 16 (39.0) | 2 (4.7) |
| Concomitant with PM/DM/CADM | 66 (57.9) | 19 (63.4) | 19 (46.4) | 28 (65.1) |
| After PM/DM/CADM onset | 26 (22.8) | 7 (23.3) | 6 (14.6) | 13 (30.2) |
| Form of ILD | ||||
| Acute/subacute | 59 (51.8) | 14 (46.7) | 22 (53.7) | 23 (53.5) |
| Chronic | 55 (48.2) | 16 (53.3) | 19 (46.3) | 20 (46.5) |
| Signs | ||||
| Dyspnea during effort | 66 (57.9) | 17 (56.7) | 25 (61.0) | 24 (55.8) |
| Cough | 73 (64.0) | 22 (73.3) | 23 (56.1) | 28 (65.1) |
| Fever | 59 (51.8) | 17 (56.7) | 24 (58.5) | 18 (41.9) |
| Arthralgia | 52 (45.6) | 15 (50.0) | 21 (51.2) | 16 (39.0) |
| Fine crackles | 98 (86.0) | 24 (85.7) | 35 (94.6) | 39 (95.1) |
Data are presented as the medians (interquartile ranges) or n (%).
ILD: interstitial lung disease; PM: polymyositis; DM: dermatomyositis; CADM: clinically amyopathic dermatomyositis.