Ophthalmic statistics note: the perils of dichotomising continuous variables

Affiliations

• ¹ Centre for Paediatric Epidemiology and Biostatistics, UCL Institute of Child Health, London, UK.
• ² Department of Biostatistics, Faculty of Health and Life Sciences, University of Liverpool, Liverpool, UK Department of Eye and Vision Science, Faculty of Health and Life Sciences, University of Liverpool, Liverpool, UK.
• ³ NIHR Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, UK.
• ⁴ UCL Clinical Trials Unit, University College London, London, UK.
• ⁵ Department of Primary Care and Population Health & PRIMENT Clinical Trials Unit, University College London, London, UK.
• ⁶ Department of Biostatistics, Faculty of Health and Life Sciences, University of Liverpool, Liverpool, UK.