Table 1 Baseline characteristics
| Â | Before matching | After matching | ||||
|---|---|---|---|---|---|---|
PCI N = 1652 (%) | CABG N = 335 (%) | p-value | PCI N = 200 (%) | CABG N = 200 (%) | p-value | |
Age (years, mean [SD]) | 66 (11) | 66 (10) | 0.517 | 66 (10) | 66 (10) | 0.753 |
Gender (male) | 1185 (72) | 247 (74) | 0.498 | 135 (67) | 146 (73) | 0.274 |
Hypertension | 1296 (79) | 253 (76) | 0.249 | 158 (79) | 151 (75) | 0.474 |
Current smoker | 423 (26) | 90 (27) | 0.654 | 60 (30) | 57 (28) | 0.826 |
Hyperlipidemia | 1381 (84) | 256 (77) | 0.003 | 167 (83) | 159 (79) | 0.367 |
Prior PCI | 787 (48) | 107 (32) |  < 0.001 | 61 (30) | 62 (31) | 1.000 |
Prior MI | 736 (45) | 104 (31) |  < 0.001 | 68 (34) | 64 (32) | 0.750 |
Ejection fraction (%) | 0.022 | Â | Â | 0.765 | ||
 > 50 | 566 (50) | 117 (41) |  | 95 (48) | 95 (48) |  |
 40–50 | 297 (27) | 91 (32) |  | 53 (26) | 57 (28) |  |
 30–40 | 180 (16) | 49 (17) |  | 37 (18) | 30 (15) |  |
 < 30 | 79 (7) | 29 (10) |  | 15 (8) | 18 (9) |  |
Renal impairment | 274 (17) | 44 (13) | 0.137 | 38 (19) | 34 (17) | 0.696 |
COPD | 89 (7) | 14 (6) | 0.493 | 13 (9) | 8 (6) | 0.513 |
History of CVA/TIA | 178 (11) | 34 (10) | 0.833 | 18 (9) | 18 (9) | 1.000 |
Congestive heart failure | 188 (11) | 43 (13) | 0.492 | 26 (13) | 25 (12) | 1.000 |
Vessels involved |  < 0.001 |  |  | 0.901 | ||
 1-vessel CAD | 363 (27) | 11 (4) |  | 10 (5) | 9 (4) |  |
 2-vessel CAD | 454 (34) | 53 (21) |  | 46 (23) | 43 (22) |  |
 3-vessel CAD | 534 (39) | 193 (75) |  | 144 (72) | 148 (74) |  |
Indication for angiography | 0.810 | Â | Â | 0.816 | ||
 NSTEMI | 1140 (69) | 234 (70) |  | 153 (76) | 150 (75) |  |
 Unstable angina | 512 (31) | 101 (30) |  | 47 (24) | 50 (25) |  |
Time period: after year 2008 | 1036 (63) | 181 (54) | 0.004 | 143 (71) | 132 (66) | 0.281 |