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

Affiliations

• ¹ Health Economics Research Centre, Nuffield Department of Population Health, University of Oxford, Oxford, UK. [email protected].
• ² Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK. [email protected].
• 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.