Comparison of different methods in management of multivariate missing data / 第二军医大学学报
Academic Journal of Second Military Medical University
;
(12)2001.
Article
Dans Chinois
| WPRIM
| ID: wpr-555432
ABSTRACT
Objective:
To explore the results of different methods for managing multivariate missing data.Methods:
Case deletion, simple imputation and multiple imputation were compared when used for analyzing the clinical data of 925 liver cancer patients with medium multivariate missing data.Results:
There were differences among the 3 methods. When ?=0.05, the risk factors influencing patients' survival time were clinical staging,history of hepatic cirrhosis, portal vein tumor thrombas, and levels of g-GT and WBC with multiple imputation, and were TNM staging, lipiodol dose, AST and ALP with case deletion. The 3 more factors of simple imputation were TNM staging, ALP and AFP compared with multiple imputation.Conclusion:
Simple imputation is superior to case deletion in management of multivariate missing data but tends to make standard error smaller and P value lower. Multiple imputation is more reasonable and scientific than the other 2 methods.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
langue:
Chinois
Texte intégral:
Academic Journal of Second Military Medical University
Année:
2001
Type:
Article
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