Anemia and perioperative mortality in non-cardiac surgery patients: a secondary analysis based on a single-center retrospective study

Table 3 The results of univariate and multivariate analyses in propensity score matched cohort

ANEMIA CATEGORY	model i*	ModEL iI*	ModEL iIi*
Postop- transfusion
None or mild	Ref	Ref	Ref
Moderate or severe	8.566 (6.571, 11.17) <0.001	7.456 (5.397, 10.30) <0.001	5.608 (4.026, 7.811) <0.001
ICUADMGT24H
None or mild	Ref	Ref	Ref
Moderate or severe	0.923 (0.784, 1.087) 0.337	0.964 (0.759, 1.224) 0.763	0.810 (0.628, 1.044) 0.104
THIRTY-DAY MORTALITY
None or mild	Ref	Ref	Ref
Moderate or severe	1.936 (1.530, 2.449) <0.001	1.996 (1.413, 2.819) <0.001	1.510 (1.049, 2.174) 0.027

The results were expressed as odds ratio (95%confidence interval) P-value
MODEL I* ( The propensity score-based patient-matching model): we adjusted for propensity score
MODEL II* (The propensity score-based IPW model):we did not adjust any covariates with the propensity score-based IPW
MODEL III*(The doubly robust estimation model): we adjusted for DM, RDW,the RCRI score, the ASA status, with the propensity score-based IPW

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