Table 1 Preoperative and intraoperative characteristics of patients who underwent SITA CABG and MIDCAB procedures. The data are presented for the unmatched and matched cohorts
All | Unmatched cohort, n (%) | Matched cohort, n (%) | ||||||
|---|---|---|---|---|---|---|---|---|
CABG | MIDCAB | p value | SMD | CABG n = 134 | MIDCAB n = 134 | SMD | ||
N = 1915 | n = 1752 | n = 163 | ||||||
Male | 1318 (68.8%) | 1200 (68.5%) | 118 (72.4%) | 0.304 | 0.086 | 90 (67.2%) | 94 (70.1%) | 0.064 |
Age (years), mean (SD) | 68.37 (10.71) | 68.79 (10.39) | 63.88 (12.95) | < 0.001 | 0.418 | 66.63 (10.04) | 65.16 (13.18) | 0.125 |
Age ≥ 70 years | 977 (51.0%) | 921 (52.6%) | 56 (34.4%) | < 0.001 | 0.374 | 53 (39.6%) | 54 (40.3%) | 0.015 |
NIDDM | 722 (37.7%) | 682 (38.9%) | 40 (24.5%) | < 0.001 | 0.313 | 36 (26.9%) | 35 (26.1%) | 0.017 |
IDDM | 152 (7.9%) | 146 (8.3%) | 6 (3.7%) | 0.036 | 0.197 | 5 (3.7%) | 6 (4.5%) | 0.038 |
DM | 855 (44.6%) | 809 (46.2%) | 46 (28.2%) | < 0.001 | 0.378 | 41 (30.6%) | 41 (30.6%) | 0.000 |
COPD | 239 (12.5%) | 190 (10.8%) | 49 (30.1%) | < 0.001 | 0.491 | 37 (27.6%) | 32 (23.9%) | 0.085 |
CHF | 392 (20.5%) | 364 (20.8%) | 28 (17.2%) | 0.276 | 0.092 | 26 (19.4%) | 25 (18.7%) | 0.019 |
EF < 30% | 159 (8.3%) | 155 (8.8%) | 4 (2.5%) | 0.005 | 0.280 | 4 (3.0%) | 4 (3.0%) | 0.000 |
CRF | 241 (12.6%) | 210 (12.0%) | 31 (19.0%) | 0.01 | 0.195 | 27 (20.1%) | 21 (15.7%) | 0.117 |
Recent MI | 561 (29.3%) | 537 (30.7%) | 24 (14.8%) | < 0.001 | 0.387 | 23 (17.2%) | 23 (17.2%) | 0.000 |
Acute MI | 372 (19.4%) | 350 (20.0%) | 22 (13.5%) | 0.045 | 0.174 | 15 (11.2%) | 15 (11.2%) | 0.000 |
MI | 1015 (53.0%) | 949 (54.2%) | 66 (40.5%) | < 0.001 | 0.277 | 68 (50.7%) | 58 (43.3%) | 0.150 |
UAP | 1124 (58.7%) | 1017 (58.0%) | 107 (65.6%) | 0.06 | 0.157 | 75 (56.0%) | 83 (61.9%) | 0.122 |
EuroSCORE I, median (IQR) | 7 (4–9) | 7.0 (4.0–10.0) | 3.4 (2.1–6.2) | < 0.001 | 0.578 | 5.0 (3.0–8.0) | 3.6 (2.2–6.5) | 0.297 |
IABP | 173 (9.0%) | 171 (9.8%) | 2 (1.2%) | < 0.001 | 0.381 | 3 (2.2%) | 2 (1.5%) | 0.055 |
Emergency | 360 (18.8%) | 360 (20.5%) | 0 (0%) | < 0.001 | 0.719 | 5 (3.7%) | 0 (0%) | 0.278 |
Redo operation | 63 (3.3%) | 62 (3.5%) | 1 (0.6%) | 0.045 | 0.206 | 0 (0%) | 1 (0.7%) | 0.123 |
PVD | 476 (24.9%) | 464 (26.5%) | 12 (7.4%) | < 0.001 | 0.527 | 13 (9.7%) | 11 (8.2%) | 0.052 |
Old CVA | 144 (7.5%) | 135 (7.7%) | 9 (5.5%) | 0.312 | 0.088 | 7 (5.2%) | 7 (5.2%) | 0.000 |
OPCAB | 755 (39.4%) | 592 (33.8%) | 163 (100%) | < 0.001 | 1.980 | 41 (30.6%) | 134 (100%) | 2.130 |
Prior PCI | 380 (19.8%) | 323 (18.4%) | 57 (35.0%) | < 0.001 | 0.380 | 42 (31.3%) | 43 (32.1%) | 0.016 |
LIMA to LAD | 1912 (99.8%) | 1752 (100%) | 160 (98.2%) | > 0.999 | 0.194 | 134 (100%) | 132 (98.5%) | 0.174 |
Number of diseased vessels | 1419 (74.1%) | 1259 (71.9%) | 160 (98.2%) | < 0.001 | 0.792 | 125 (93.3%) | 131 (97.8%) | 0.218 |
Bypass number ≥ 3 | 1145 (59.8%) | 1145 (65.4%) | 0 (0%) | < 0.001 | 1.942 | 101 (75.4%) | 0 (0%) | 2.474 |
SEQNUM | 882 (46.1%) | 882 (50.3%) | 0 (0%) | < 0.001 | 1.424 | 69 (51.5%) | 0 (0%) | 1.457 |
SVG | 1166 (60.9%) | 1165 (66.5%) | 1 (0.6%) | < 0.001 | 1.947 | 90 (67.2%) | 1 (0.7%) | 1.967 |
GEA | 74 (3.9%) | 74 (4.2%) | 0 (0%) | 0.007 | 0.297 | 0 (0%) | 0 (0%) | 0.000 |
Radial artery | 547 (28.6%) | 547 (31.2%) | 0 (0%) | < 0.001 | 0.953 | 47 (35.1%) | 0 (0%) | 1.039 |
Left main disease | 460 (24.0%) | 446 (25.5%) | 14 (8.6%) | < 0.001 | 0.461 | 13 (9.7%) | 14 (10.4%) | 0.025 |