Table 4.
Comparison of length of stay in intensive care unit (ICU), in-hospital stay, and death within 30 days after surgery before and after propensity score matching (PSM) between transfusion (Transf.) group and control group.
| Outcomes | Before PSM | After PSM | ||||
|---|---|---|---|---|---|---|
| Transf. group (n=631) |
Control group (n=1547) |
P-value | Transf. group (n=440) |
Control group (n=440) |
P-value | |
| Mechanical ventilation (hours) | 39.4±1.9 | 22.5±0.4 | < 0.001 | 34.2±1.9 | 24.2±1.0 | < 0.001 |
| Length of stay in ICU (days) | 2.36±0.12 | 1.41±0.02 | < 0.001 | 2.02±0.09 | 1.51±0.05 | < 0.001 |
| Length of in-hospital stay after surgery (days) | 8.04±0.16 | 6.57±0.05 | < 0.001 | 7.63±0.14 | 6.98±0.12 | < 0.001 |
ICU = Intensive care unit