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Fig. 8 | BMC Medical Research Methodology

Fig. 8

From: Multiple imputation for patient reported outcome measures in randomised controlled trials: advantages and disadvantages of imputing at the item, subscale or composite score level

Fig. 8

RMSE in the treatment coefficient estimates using the imputed OKS composite scores as the outcome variable in the regression model (70% item-nonresponse). Abbreviations: CCA – Complete cases analysis; MAR – Missing at random; MI – Multiple imputation; OKS – Oxford knee score; PMM – Predicted mean matching; RMSE – Root mean square error

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BMC Medical Research Methodology

ISSN: 1471-2288

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