Table 1 Baseline characteristics before and after propensity score matching
From: Del-Nido cardioplegia in cardiac surgery for elderly patients: a propensity score-matched analysis
Variable | Before propensity score matching | After propensity score matching | ||||||
|---|---|---|---|---|---|---|---|---|
DNC (n = 90) | CBC (n = 212) | P | | SMD | (%) | DNC (n = 89) | CBC (n = 89) | P | | SMD | (%) | |
Age (years) | 72 (71–74) | 72 (70–74) | 0.499 | 8.2 | 72 (71–74) | 72 (70–74) | 0.828 | 5.0 |
EuroSCORE II (%) | 1.9 (1.4–3.2) | 2.0 (1.5–3.3) | 0.706 | 9.7 | 1.8 (1.4–3.1) | 2.0 (1.4–3.4) | 0.686 | 5.7 |
BMI (kg/m2) | 22.1 (20.4–24.1) | 22.5 (19.9–24.4) | 0.770 | 0.4 | 22.1 (20.4–24.0) | 22.6 (20.5–24.6) | 0.413 | 7.4 |
Male (%) | 49 (54.4) | 119 (56.1) | 0.787 | 3.4 | 49 (55.1) | 53 (59.6) | 0.544 | 9.0 |
NYHA III/IV (%) | 69 (76.7) | 168 (79.2) | 0.618 | 6.1 | 68 (76.3) | 70 (78.6) | 0.719 | 5.3 |
eGFR (ml/min/1.73m2) | 78.5 (64.3–94.1) | 76.0 (58.8–86.7) | 0.378 | 17.8 | 78.9 (64.9–94.1) | 77.2 (60.2–88.4) | 0.273 | 17.0 |
LVEF (%) | 64 (60–69) | 63 (58–67) | 0.841 | 12.2 | 64 (60–69) | 64 (59–66) | 0.514 | 9.0 |
Comorbidities | ||||||||
Af | 37 (41.1) | 91 (42.9) | 0.771 | 3.7 | 37 (41.6) | 35 (39.3) | 0.760 | 4.5 |
Hypertension | 35 (38.9) | 110 (51.9) | 0.039 | 26.5 | 35 (39.3) | 35 (39.3) | 1.000 | < 0.1 |
Diabetes mellitus | 12 (13.3) | 33 (15.6) | 0.618 | 6.5 | 12 (13.5) | 10 (11.2) | 0.649 | 6.6 |
Stroke | 6 (6.7) | 17 (8.0) | 0.685 | 5.4 | 6 (6.7) | 5 (5.6) | 0.756 | 4.5 |
CAD | 26 (28.9) | 51 (24.1) | 0.378 | 10.6 | 26 (29.2) | 22 (24.7) | 0.499 | 9.8 |
PCI history | 7 (7.8) | 8 (3.8) | 0.155 | 14.9 | 7 (7.9) | 5 (5.6) | 0.550 | 8.3 |
COPD | 16 (17.8) | 19 (9.0) | 0.029 | 22.9 | 15 (16.9) | 15 (16.9) | 1.000 | < 0.1 |
Active IE | 6 (6.7) | 9 (4.2) | 0.392 | 9.7 | 6 (6.7) | 4 (4.5) | 0.515 | 8.9 |
PAD | 4 (4.4) | 7 (3.3) | 0.738 | 5.5 | 3 (3.4) | 3 (3.4) | 1.000 | < 0.1 |
CKD | ||||||||
stage 1–2 | 70 (77.8) | 154 (73.0) | 0.182 | 8.3 | 70 (78.7) | 67 (75.3) | 0.481 | 5.2 |
stage 3–4 | 19 (21.1) | 57 (27.0) | 18 (20.2) | 22 (24.7) | ||||
stage 5 | 1 (1.1) | 0 (0.0) | 1 (1.1) | 0 (0.0) | ||||
Previous cardiac surgery | 4 (4.4) | 6 (2.8) | 0.492 | 7.8 | 4 (4.5) | 3 (3.4) | 1.000 | 5.4 |
Preoperative ventilator | 1 (1.1) | 1 (0.5) | 0.508 | 6.1 | 1(1.1) | 0 (0.0) | 1.000 | 10.6 |
Preoperative inotropes | 1 (1.1) | 2 (0.9) | 1.000 | 1.6 | 1 (1.1) | 1 (1.1) | 1.000 | < 0.1 |