What Is Analysis of Covariance (ANCOVA) and How to Correctly Report Its Results in Medical Research?

KHAMMAR, Alireza and Yarahmadi, Mohammad and MADADIZADEH, Farzan (2018) What Is Analysis of Covariance (ANCOVA) and How to Correctly Report Its Results in Medical Research? Iran J Public Health.

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Abstract

Sometimes in medical researches, a variable that is not among the main research variables may affect the dependent variable and its relation with the independent variable, which, if identified, can be involved in the modeling and its linear effect are controlled. This is not a dependent or independent variable, this type of variable is known as covariate (1). To control the effect of covariate variable, not only the changes in variance of the dependent variable are examined (ANOVA), but also the relationship between the dependent variable and covariate in different levels of a qualitative variable is analyzed (Regression) (2). The statistical method that can combine ANOVA and Regression for adjusting linear effect of covariate and make a clearer picture is called the analysis of covariance (ANCOVA)

Item Type: Article
Subjects: R Medicine > RZ Other systems of medicine
Divisions: Faculty of Medicine, Health and Life Sciences > School of Medicine
Depositing User: samira sepahvandy
Date Deposited: 21 Sep 2020 04:20
Last Modified: 21 Sep 2020 04:20
URI: http://eprints.lums.ac.ir/id/eprint/2338

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