Characteristics of OHCA cases with and out without rheumatoid arthritis
| Cases with rheumatoid arthritis (n=512) | Cases without rheumatoid arthritis (n=34 683) | |
| Age (years), median (IQR) | 76 (68–82) | 72 (62–81) |
| Male sex, n (%) | 231 (45.12) | 23 288 (67.15) |
| Comorbidity, n (%) | ||
| Ischaemic heart disease* | 181 (35.35) | 9135 (26.34) |
| Heart failure | 150 (29.30) | 6986 (20.14) |
| Atrial fibrillation | 105 (20.51) | 5997 (17.29) |
| Diabetes mellitus | 79 (15.43) | 5251 (15.14) |
| Cerebrovascular disease | 79 (15.43) | 4831 (13.93) |
| Peripheral artery disease | 83 (16.21) | 3831 (11.05) |
| Concomitant pharmacotherapy, n (%) | ||
| Beta blockers | 150 (29.30) | 8419 (24.27) |
| Calcium channel blockers | 113 (22.07) | 6865 (19.79) |
| Antithrombotics | 272 (53.13) | 15 803 (45.46) |
| Diuretics | 324 (63.28) | 17 192 (49.57) |
| Renin–angiotensin system inhibitors | 218 (42.58) | 12 887 (37.16) |
| Nitrates | 65 (12.70) | 3897 (11.24) |
| Antiarrhythmic drugs class 1 or 3 | 14 (2.73) | 661 (1.91) |
| QT-prolonging drugs | 103 (20.12) | 5754 (16.59) |
Numbers are number (%) unless indicated otherwise.
*Including acute myocardial infarction.
OHCA, out-of-hospital cardiac arrest.