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

BMC Med Res Methodol. 2018 Oct 16;18(1):107. doi: 10.1186/s12874-018-0563-1.

¹ Health Economics Research Centre, Nuffield Department of Population Health, University of Oxford, Oxford, UK. ines.rombach@ndorms.ox.ac.uk.
² Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK. ines.rombach@ndorms.ox.ac.uk.
³ Health Economics Research Centre, Nuffield Department of Population Health, University of Oxford, Oxford, UK.
⁴ Health Services Research Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK.
⁵ Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK.
⁶ National Perinatal Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK.

Abstract

Following publication of the original article [1], the authors reported that the following notation wasn't used consistently.