HIGHLIGHTS
- who: Yves Eggli from the the outcome variance [25]However, we did not compute the individual variable PEVs as, unless the regressors are all orthogonal, the variable-specific PEVs do not add up to the total level PEV [26]. Instead, to assess the importance of each independent variable we computed the contrast (i.e. the predicted difference in mean outcome values) between two different covariate-patterns. To keep interpretations simple, we contrasted covariatepatterns, which differed by only one variable taking a different value in each pattern (e_g mean treatment-cost difference between patients in the older and . . .
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