Sentences with phrase «after imputation»
Similarly, the complete - case analysis implies that drinking alcohol is negatively associated with internalizing problems; after imputation, that relation is insignificant and there is evidence of a significant positive association between smoking and internalizing problems.
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Baseline drinking status (ever vs never tried alcohol) did not predict attrition, but to account for attrition bias related to other variables, estimation was carried out after multiple imputation using the standard missing at random assumption (ie, missing data are assumed missing at random conditional on observed predictors included in the model).27 The imputation model included all the predictors in the alcohol models plus a number of auxiliary variables that were not of direct theoretical interest but were nonetheless predictive of missingness so as to improve the quality of the imputations and make the missing at random assumption more plausible.28