Fig. 10From: Multiple imputation for patient reported outcome measures in randomised controlled trials: advantages and disadvantages of imputing at the item, subscale or composite score levelRMSE in the treatment coefficient estimates using the imputed PCS composite scores as the outcome variable in the regression model. Abbreviations: CCA – Complete cases analysis; MAR – Missing at random; MI – Multiple imputation; PCS – SF-12 Physical component summary score; PMM – Predicted mean matching; RMSE – Root mean square errorBack to article page