Table 1.
Patient Characteristics for All STEMI Patients: Quarter 1 Versus Quarter 7
| Characteristic | Quarter 1 (N=3477) | Quarter 7 (N=3311) |
P Value |
|---|---|---|---|
| Median age, y | 61.0 (52.0–70.0) | 60.0 (52.0–70.0) | 0.72 |
| Male sex | 2433 (70.0%) | 2391 (72.2%) | 0.044 |
| Race | 0.22 | ||
| White | 2913 (83.8%) | 2724 (82.3%) | |
| Black | 375 (10.8%) | 381 (11.5%) | |
| Other | 189 (5.4%) | 206 (6.2%) | |
| Latino ethnicity | 358 (10.3%) | 323 (9.8%) | 0.47 |
| Insurance | |||
| Private/HMO | 1912 (55.0%) | 1860 (56.2%) | 0.64 |
| Medicaid | 321 (9.2%) | 363 (11.0%) | 0.03 |
| None | 565 (16.2%) | 505 (15.3%) | 0.27 |
| Other | 707 (20.3%) | 632 (19.1%) | 0.2 |
| Prior myocardial infarction | 376 (10.8%) | 416 (12.6%) | 0.11 |
| Prior heart failure | 123 (3.5%) | 90 (2.7%) | 0.02 |
| Prior PCI | 443 (12.7%) | 441 (13.3%) | 1 |
| Prior coronary bypass surgery | 132 (3.8%) | 121 (3.7%) | 0.52 |
| Diabetes mellitus | 919 (26.4%) | 876 (26.5%) | 0.98 |
| Median symptom onset to FMC (minutes) | 69.0 (31.0–172.0) | 68.5 (31.5–167.5) | 0.58 |
| Shock on presentation | 262 (7.5%) | 278 (8.4%) | 0.19 |
| Cardiac arrest | 253 (7.3%) | 267 (8.1%) | 0.25 |
| Heart failure on presentation | 239 (6.9%) | 222 (6.7%) | 0.81 |
| Reperfusion candidate | 3264 (93.9%) | 3200 (96.6%) | <0.0001 |
| Median heart rate on presentation, bpm | 80.0 (66.0–93.0) | 80.0 (66.0–93.0) | 0.21 |
| Median systolic blood pressure, mm Hg | 140.0 (119.0–160.0) | 140.0 (120.0–163.0) | 0.37 |
| STEMI first diagnosed | 0.81 | ||
| First ECG | 3403 (97.9%) | 3233 (97.6%) | |
| Subsequent | 46 (1.3%) | 50 (1.5%) | |
| Procedures during hospitalization | |||
| PCI | 3096 (89.0%) | 2982 (90.1%) | 0.18 |
| Coronary bypass surgery | 142 (4.1%) | 137 (4.1%) | 0.95 |
| Complications | |||
| In-hospital death | 195 (5.6%) | 198 (6.0%) | 0.51 |
| Stroke | 18 (0.5%) | 26 (0.8%) | 0.17 |
| Cardiogenic shock | 267 (7.7%) | 254 (7.7%) | 1 |
| Congestive heart failure | 212 (6.1%) | 202 (6.1%) | 1 |
| Major bleeding | 152 (4.4%) | 158 (4.8%) | 0.45 |
| Reinfarction | 32 (0.9%) | 24 (0.7%) | 0.42 |
| Not treated | 224 (6.4%) | 229 (6.9%) | 0.44 |
Data presented as n (%) or median (interquartile range). ECG indicates electrocardiogram; FMC, first medical contact-to-device time; HMO, health maintenance organization; PCI, percutaneous coronary intervention; and STEMI, ST-segment–elevation myocardial infarction