Table 1.
Baseline characteristics of study population.
| Variables | Robotic CABG (150) | Conventional CABG (1619) | P value |
|---|---|---|---|
| PROMM % (25 - 75 %) | 10.3 (7.3 - 15.5) | 12.7 (8.9 - 20.0) | < 0.001 1 |
| Age (mean ± SD) | 64.76 ± 12.47 | 63.33 ± 10.41 | 0.20 2 |
| Weight (mean ± SD) | 81.22 ± 19.71 | 81.20 ± 18.75 | 0.97 2 |
| Height (mean ± SD) | 169.23 ± 11.21 | 167.37 ± 10.26 | 0.05 2 |
| BMI (mean ± SD) | 28.1 ± 4.87 | 29.07 ± 10.47 | 0.27 2 |
| LVEF (mean ± SD) | 54.2 ± 10.58 | 49.36 ± 12.94 | < 0.001 2 |
| Number of Diseased Vessels | 2.73 ± 1.08 | 3.61 ± 0.84 | < 0.001 2 |
| Left Main Disease (%) | 22 (14.67 %) | 489 (30.17 %) | < 0.001 3 |
| Gender Male (%) | 103 (68.67 %) | 1,088 (66.0 %) | 0.67 3 |
| Diabetes (%) | 76 (50.67 %) | 861 (53.13 %) | 0.57 3 |
| COPD (%) | 21 (14.0 %) | 208 (12.9 %) | 0.71 3 |
| Cerebrovascular Disease (%) | 26 (17.33 %) | 228 (14.07 %) | 0.28 3 |
| CHF (%) | 30 (20.0 %) | 256 (15.79 %) | 0.18 3 |
| Dialysis (%) | 7 (4.67 %) | 67 (4.13 %) | 0.76 3 |
| PCI this admission (%) | 29 (19.33 %) | 30 (1.85 %) | < 0.0013 |
| PCI before admission (%) | 46 (30.67 %) | 301 (18.57 %) | < 0.0013 |
| Ethnicity - Hispanic (%) | 41 (27.52 %) | 684 (42.33) | < 0.0013 |
| Race: None-White (%) | 82 (54.67 %) | 1113 (68.68 %) | < 0.001 3 |
| SES (25 - 75 %) | - 1.62 (from - 4.65 to - 0.04) | - 2.30 (from - 5.79 to - 0.56) | 0.03 1 |
| Urgency status (%) | 58 (38.67 %) | 1058 (65.27 %) | <0.0013 |
| Previous MI (%) | 59 (39.33 %) | 860 (52.5 %) | 0.002 3 |
| Liver Disease (%) | 2 (1.3 %) | 3 (0.19 %) | 0.06 4 |
| Angina Class (0/I/II/III/IV %) | 16.33/23.81/31.29/21.77/6.8 | 7.79/15.46/32.11/32.67/11.97 | <0.0013 |
1
Mann-Whitney test;
2
Two-tail unpaired t-test;
3
Pearson chi square test;
4
Fisher exact test. Robotic endo-ACAB - robotic endoscopic atraumatic coronary artery bypass; BMI – body mass index, LVEF – left ventricular ejection fraction, COPD – chronic obstructive lung disease, CHF – congestive heart failure, MI – myocardial infarction, SES socioeconomical status.