Tuesday, 30 May 2017

Multicollinearity in Regression Analyses Conducted in Epidemiologic Studies

Multicollinearity arises when at least two highly correlated predictors are assessed simultaneously in a regression model. The adverse impact of multicollinearity in regression analysis is very well recognized and much attention to its effect is documented in the literature. 

Multicollinearity
Multicollinearity

The statistical literature emphasizes that the main problem associated with multicollinearity includes unstable and biased standard errors leading to very unstable p-values for assessing the statistical significance of predictors, which could result in unrealistic and untenable interpretations. Multicollinearity does not affect the overall fit or the predictions of the model.  Read more>>>>>>>>

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