We explore the use of instrumental variables (IV) analysis with a multisite randomized trial to estimate the effect of a mediating variable on an outcome in cases where it can be assumed that the ...
A frequent problem in the estimation of linear regression models is that the predictors are correlated with the error term contained in the regression equation. To ...
If a model has more than one endogenous variable, several facts need to be considered in the choice of an estimation method. If the model has endogenous regressors, then an instrumental variables ...
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