Table 2 Patient characteristics of MI patients recorded with and without chest pain
Variable | Level | Chest pain (n = 4109) | Non-chest pain (n = 1309) | Total (n = 5418) |
|---|---|---|---|---|
Medical services | 1813-medical helpline n(%) | 1296 (31.5) | 596 (45.5) | 1892 (34.9) |
1-1-2 emergency number n(%) | 2813 (68.5) | 713 (54.5) | 3526 (65.1) | |
Sex | Female n(%) | 1280 (31.2) | 579 (44.2) | 1859 (34.3) |
Male n(%) | 2829 (68.8) | 730 (55.8) | 3559 (65.7) | |
Age | median [iqr] | 67.5 [56.6, 76.5] | 73.5 [62.8, 81.9] | 69 [57.8, 77.9] |
Educational level | Basic n(%) | 1215 (31.1) | 468 (38.0) | 1683 (32.8) |
Intermediate n(%) | 1747 (44.8) | 512 (41.6) | 2259 (44.0) | |
Advanced n(%) | 941 (24.1) | 251 (20.4) | 1192 (23.2) | |
Missing n* | 206 | 78 | 284 | |
Ethnicity | Danish n(%) | 3461 (84.2) | 1096 (83.7) | 4557 (84.1) |
Immigrant/descendant of immigrant n(%) | 642 (15.6) | 210–213 (16) | 852–855 (15–16) | |
Missing n ** | 6 | 0–3 | 6–9 | |
Type 2 diabetes | n(%) | 644 (15.7) | 230 (17.6) | 874 (16.1) |
Hypertension | n(%) | 1385 (33.7) | 482 (36.8) | 1867 (34.5) |
Opioids | n(%) | 616 (15.0) | 324 (24.8) | 940 (17.3) |
NSAID | n(%) | 524 (12.8) | 187 (14.3) | 711 (13.1) |
Previous ischemic heart disease | n(%) | 1123 (27.3) | 255 (19.5) | 1378 (25.4) |
Previous myocardial infarction | n(%) | 749 (18.2) | 150 (11.5) | 899 (16.6) |
Previous heart failure | n(%) | 422 (10.3) | 149 (11.4) | 571 (10.5) |
Previous cancer (excluding malign melanoma) | n(%) | 367 (8.9) | 142 (10.8) | 509 (9.4) |
Previous moderate/severe renal disease | n(%) | 207 (5.0) | 88 (6.7) | 295 (5.4) |
Previous COPD | n(%) | 249 (6.1) | 191 (14.6) | 440 (8.1) |
Previous atrial fibrillation | n(%) | 401 (9.8) | 147 (11.2) | 548 (10.1) |
Allergy to ASA/contraindication (excluded from the analysis of ASA) | n(%) | 59 (1.4) | 7 (0.5) | 66 (1.2) |