Baseline characteristics among 3757 patients admitted with acute MI by day of admission and type of MI
| STEMI | NSTEMI | |||||
| Weekday (n=1591) | Weekend (n=649) | p Value | Weekday (n=1131) | Weekend (n=386) | p Value | |
| 30-day mortality (%)* | 101 (6.35) | 39 (6.00) | 0.423 | 46 (4.10) | 14 (3.63) | 0.412 |
| In-hospital mortality (%)* | 75 (4.95) | 28 (4.51) | 0.739 | 37 (3.27) | 12 (3.11) | 0.999 |
| Age, years† | 62.9±13.0 | 62.9±13.9 | 0.908 | 67.7±13.0 | 70.2±13.1 | 0.01 |
| Gender, male (%)* | 1161 (72.9) | 475 (73.2) | 0.999 | 789 (70.0) | 247 (64.0) | 0.180 |
| Cardiac arrest (%)* None VT/ VF Asystole/PEA Unknown | 1367 (85.9) 155 (9.74) 38 (2.39) 31 (1.95) | 566 (87.2) 62 (9.55) 8 (1.23) 13 (2.00) | 0.378 – – – | 1081 (95.6) 22 (1.94) 16 (1.41) 12 (1.06) | 362 (93.8) 4 (1.04) 6 (1.55) 14 (3.62) | 0.679 – – – |
| Previous MI (%)* | 177 (11.2) | 78 (12.1) | 0.701 | 351 (31.0) | 116 (30.1) | 0.579 |
| Left ventricular ejection fraction (%)* Normal/mild Moderate Severe Unknown | 480 (30.2) 504 (31.7) 114 (7.17) 493 (31.0) | 216 (33.3) 199 (30.7) 50 (7.70) 184 (28.4) | 0.549 – – – | 506 (44.7) 204 (18.4) 66 (5.84) 355 (31.4) | 163 (42.2) 79 (20.5) 30 (7.77) 114 (29.5) | 0.164 – – – |
| Hypertension (%)* | 539 (33.9) | 234 (36.2) | 0.246 | 613 (54.2) | 213 (55.2) | 0.651 |
| Hypercholesterolaemia(%)* | 567 (35.6) | 248 (38.2) | 0.167 | 648 (57.2) | 213 (55.2) | 0.982 |
| PVD (%)* | 79 (5.00) | 29 (4.50) | 0.652 | 97 (8.58) | 37 (9.59) | 0.765 |
| CVD (%)* | 83 (5.21) | 32 (4.93) | 0.522 | 110 (9.73) | 51 (13.2) | 0.208 |
| COPD (%)* | 218 (13.1) | 85 (13.1) | 0.565 | 208 (18.4) | 62 (16.1) | 0.604 |
| CKD (%)* | 45 (2.83) | 19 (2.92) | 0.770 | 115 (10.2) | 35 (9.07) | 0.603 |
| Smoking, current (%)* | 615 (38.7) | 257 (39.6) | 0.582 | 306 (27.1) | 96 (24.9) | 0.478 |
| Diabetes (%)* | 187 (11.7) | 78 (12.0) | 0.174 | 255 (22.5) | 77 (19.9) | 0.105 |
*Difference between groups was assessed using a χ2 test.
† Difference between groups was assessed using an independent-samples t-test.
Continuous variables are summarised as mean (SD). Categorical variables are summarised as n (%).
CKD, chronic kidney disease; COPD, chronic obstructive pulmonary disease; CVD, cerebrovascular disease; MI, myocardial infarction; PEA, pulseless electrical activity; PVD, peripheral vascular disease; VF/VT, ventricular fibrillation/ventricular tachycardia.