Characteristics of study population at first acute coronary syndrome.
| Characteristics | Patients with IIM | General Population |
|---|---|---|
| No. events | 53 | 313 |
| Unstable angina | 2 (4) | 28 (9) |
| NSTEMI | 17 (32) | 103 (33) |
| STEMI | 34 (64) | 182 (58) |
| Women | 30 (57) | 136 (43) |
| Age at event, yrs, mean (SD) | 70 (11) | 70 (11) |
| Time to event, yrs, median (IQR) | 2.4 (1.0–4.6) | 3.5 (1.8–6.0) |
| Cardiac comorbidities | ||
| Stroke | 1 (2) | 16 (5) |
| Atrial fibrillation | 6 (11) | 19 (6) |
| Stable angina | 4 (8) | 28 (9) |
| Diabetes | 4 (8) | 30 (10) |
| Hypertension | 10 (19) | 46 (15) |
| Heart failure | 2 (4) | 10 (3) |
Values are n (%), unless specified. IIM: idiopathic inflammatory myopathy; STEMI: ST-elevation myocardial infarction; NSTEMI: non-STEMI; IQR: interquartile range.