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Application of propensity score matching in the design of an epidemiological study / 中华流行病学杂志
Chinese Journal of Epidemiology ; (12): 514-517, 2009.
Artigo em Chinês | WPRIM | ID: wpr-266488
ABSTRACT
In this article, we presented the rationale and calculation procedures of the propcnsity score matching (PSM), and its application in the designing stage of an cpidcrniological study. Based on existing observational data, PSM can be used to select one or more comparable controls for each subject in 'treatment' group according to the propensity scores estimated by 'treatment' variable and main covariates. The results of an example analysis showed that the bias for main confounders between the treated and control samples declined more than 55% after PMS.

Conclusion:

PSM can reduce most of the confounding bias of the observational study, and can obtain approximate study effect to the randomized controlled trials when used in the designing of thc cpidcmiological study.

Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Tipo de estudo: Ensaio Clínico Controlado / Estudo observacional Idioma: Chinês Revista: Chinese Journal of Epidemiology Ano de publicação: 2009 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Tipo de estudo: Ensaio Clínico Controlado / Estudo observacional Idioma: Chinês Revista: Chinese Journal of Epidemiology Ano de publicação: 2009 Tipo de documento: Artigo