Factors influencing the decision to bring the patient for primary coronary angiography
| Characteristic | Cathlab (n=124) | Conservative/medical management only (n=35) | P value |
| Age, years, median (IQR) | 83 (81–86) | 85 (82.5–91) | 0.016 |
| Male gender, % (n) | 52.4 (65/124) | 45.7 (16/35) | 0.44 |
| Admitted from nursing home, % (n) | 4.8 (6/124) | 22.9 (8/35) | 0.001 |
| Hypertension, % (n) | 57.3 (71/124) | 71.4 (25/35) | 0.17 |
| Diabetes, % (n) | 8.9 (11/124) | 11.4 (4/35) | 0.57 |
| Previous MI, % (n) | 15.3 (19/124) | 31.4 (11/35) | 0.019 |
| Hypercholesterolaemia, % (n) | 50 (62/124) | 60 (21/35) | 0.62 |
| Never smoked, % (n) | 47.6 (59/124) | 68.6 (24/35) | 0.003 |
| Previous CABG, % (n) | 5.6 (7/124) | 5.7 (2/35) | 0.7 |
| Previous PCI, % (n) | 12.1 (15/124) | 22.9 (8/35) | 0.012 |
| Previous CVA, % (n) | 4 (5/124) | 14.3 (5/35) | 0.04 |
| Previous PVD, % (n) | 2.4 (3/124) | 14.3 (5/35) | 0.005 |
| Cardiogenic shock, % (n) | 13.7 (17/124) | 20 (7/35) | 0.25 |
| Tachycardia on admission, % (n) | 14.5 (18/124) | 21.5 (11/48) | 0.007 |
| Bradycardia on admission, % (n) | 13.9 (17/124) | 14.5 (07/48) | 0.019 |
| Median hs-cTnT (IQR) | 3232 (1319–7721) | 1305 (1145–7385) | <0.001 |
| Median creatinine (IQR) | 86.5 (59.8–113) | 98 (78–120) | 0.245 |
CABG, coronary artery bypass grafting; CVA, cerebrovascular accident; hs-cTnT, high sensitivity cardiac troponin T; MI, myocardial infarction; PCI, percutaneous coronary intervention; PVD, peripheral vascular disease.