Table 1.
Comparison of the baseline characteristics of the patients between the first and second years (N=1493)*
|
First Year
|
Second Year
|
P | |
|---|---|---|---|
| (N=734) | (N=759) | ||
| Age (y) | 58.92±11.53 | 60.06±12.04 | 0.208 |
| Male | 595 (81.1) | 633 (83.4) | 0.250 |
| ST-Elevation Leads | |||
| Precordial | 324 (46.2) | 355 (46.3) | 0.943 |
| Lateral | 103 (14.7) | 112 (14.6) | 0.978 |
| Inferior | 311 (44.3) | 334 (43.6) | 0.788 |
| Posterior | 76 (10.8) | 79 (10.3) | 0.749 |
| Right side | 68 (9.7) | 91 (11.9) | 0.177 |
| BBB-MI | 5 (0.7) | 3 (0.4) | 0.495 |
| Culprit Vessel | |||
| Left main | 3 (0.4) | 4 (0.5) | 1.000 |
| LAD | 324 (46.2) | 358 (46.7) | 0.823 |
| LCX | 73 (10.4) | 86 (11.2) | 0.620 |
| RCA | 205 (29.2) | 227 (29.6) | 0.856 |
| SVG | 8 (1.1) | 11 (1.4) | 0.616 |
| Diagonal | 23 (3.3) | 34 (4.4) | 0.250 |
| OM | 33 (4.7) | 52 (6.8) | 0.087 |
| Ramus | 2 (0.3) | 8 (1.0) | 0.112 |
| PDA | 16 (2.3) | 18 (2.3) | 0.928 |
| PLB | 19 (2.7) | 15 (2.0) | 0.341 |
| Season | |||
| Spring | 125 (17.3) | 185 (25.6) | 0.203 |
| Summer | 199 (27.5) | 156 (21.5) | 0.871 |
| Fall | 293 (40.5) | 219 (30.2) | 0.265 |
| Winter | 107 (14.8) | 164 (22.7) | 0.681 |
| Route of Arrival | |||
| Ambulance-PPCH | 35 (5.6) | 65 (10.7) | <0.001 |
| Ambulance-NPPCH | 29 (4.6) | 61 (10.0) | <0.001 |
| Self-transported | 550 (88.0) | 469 (76.9) | <0.001 |
| Admitted | 11 (1.8) | 15 (2.5) | 0.570 |
| Work Shifts of ED | |||
| One | 322 (43.9) | 308 (40.6) | 0.211 |
| Two | 227 (30.9) | 251 (33.0) | 0.324 |
| Three | 185 (25.2) | 200 (26.4) | 0.547 |
BBB-MI, Bundle branch block myocardial infarction; LAD, Left anterior descending artery; LCX, Left circumflex artery; RCA, Right coronary artery; SVG, Saphenous vein graft, OM, Obtuse marginal; PDA, Posterior descending artery; PLB, Posterior left ventricular branch; PPCH, Primary percutaneous coronary intervention capable hospital; NPPCI, Non–primary percutaneous coronary intervention capable hospital; ED, Emergency department; Work shifts of ED, Work shift of the emergency department as Shift 1: 8 Am to 4 PM, Shift 2: 4 PM to 12 AM, and Shift 3: 12 AM to 8 AM
*
Data are presented as n (%) or mean±SD.