Variables | Before PSM | After PSM | ||||
---|---|---|---|---|---|---|
The gelatin group (n = 1921) | The HES group (n = 12,522) | P | The gelatin group (n = 1880) | The HES group (n = 1880) | P | |
Primary outcome | ||||||
AKI | 57 (3.0) | 567 (4.5) | 0.002 | 56 (3.0) | 96 (5.1) | 0.001 |
Secondary outcomes | ||||||
Perioperative RBCs transfusion, % | 927 (48.3) | 4964 (39.6) | < 0.001 | 904 (48.1) | 872 (46.4) | 0.296 |
Perioperative FFP transfusion, % | 246 (12.8) | 1411 (11.3) | 0.049 | 243 (12.9) | 243 (12.9) | 1.000 |
Perioperative Platelet transfusion, % | 82 (4.3) | 509 (4.1) | 0.675 | 81 (4.3) | 76 (4.0) | 0.684 |
Chest drainage volume on the first day after surgery, mL | 350 (270, 500) | 340 (250, 480) | 0.001 | 360 (270, 500) | 350 (250, 480) | 0.008 |
Total chest drainage volume, mL | 740 (540, 1100) | 710 (520, 1030) | < 0.001 | 745 (540, 1100) | 730 (530, 1060) | 0.217 |
MV time, h | 15 (11, 17) | 15 (11, 18) | 0.139 | 15 (11, 17) | 14 (11, 17) | 0.117 |
Cerebrovascular event | 5 (0.3) | 45 (0.4) | 0.491 | 4 (0.2) | 5 (0.3) | 0.739 |
IABP insertion | 7 (0.4) | 80 (0.6) | 0.148 | 7 (0.4) | 10 (0.5) | 0.466 |
CRRT | 4 (0.2) | 54 (0.4) | 0.150 | 4 (0.2) | 9 (0.5) | 0.165 |
ECMO insertion | 1 (0.1) | 10 (0.1) | 0.681 | 1 (0.1) | 0 (0) | 0.317 |
ICU LOS, d | 2 (1, 4) | 2 (1, 4) | 0.821 | 2 (1, 4) | 2 (1, 4) | 0.765 |
LOS, d | 14 (11, 17) | 14 (12, 17) | 0.001 | 14 (11, 17) | 14 (11, 17) | 0.836 |
In-hospital death | 9 (0.5) | 64 (0.5) | 0.806 | 9 (0.5) | 15 (0.8) | 0.219 |
ICU costs, RMB | 14,034.89 (9195.39, 21,234.63) | 13,743.63 (8645.27, 20,480.52) | 0.004 | 14,059.29 (9185.88, 21,288.03) | 14,470.15 (8983.57, 21,772.20) | 0.548 |
Hospital costs, RMB | 116,812.18 (101,644.89, 139,005.49) | 114,489.92 (99,029.049, 136,460.98) | < 0.001 | 116,803.79 (101,688.57, 139,169.79) | 1,186,499.33 (101,333.45, 138,828.94) | 0.684 |