title: Estimate at your peril: imputation methods for patient withdrawal can bias efficacy outcomes in chronic pain trials using responder analyses.
authors: Pain Research and Nuffield Division of Anaesthetics, Department of Clinical Neurosciences, University of Oxford, The Churchill Hospital, Oxford, UK Department of Occupational, Social and Environmental Medicine, University Medical Center Göttingen, Göttingen, Germany Centre for Pain Research, The University of Bath, Bath, UK The UK Cochrane Centre, NHS R&D Programme, Summertown Pavilion, Middle Way, Oxford, UK Pain Clinic/Regional Centre of Excellence in Palliative Care, Haukeland University Hospital, Bergen, Norway Pain Clinic, Department of Anaesthesiology and Intensive Care Medicine, Helsinki University Central Hospital, Meilahti Hospital, Helsinki, Finland College of Human and Health Sciences, Swansea University, Swansea, Wales, UK.
authors: Andrew R
authors: AR
authors: Moore
authors: Sebastian
authors: S
authors: Straube
authors: Christopher
authors: C
authors: Eccleston
authors: Sheena
authors: S
authors: Derry
authors: Dominic
authors: D
authors: Aldington
authors: Philip
authors: P
authors: Wiffen
authors: Rae F
authors: RF
authors: Bell
authors: Katri
authors: K
authors: Hamunen
authors: Ceri
authors: C
authors: Phillips
authors: Henry
authors: H
authors: McQuay
mesh_terms: D000700:Analgesics / Q000009:adverse effects / Q000627:therapeutic use*; D059350:Chronic Pain / Q000188:drug therapy* / Q000453:epidemiology; D002986:Clinical Trials as Topic / Q000379:methods / Q000592:standards* / Q000706:statistics & numerical data; D006801:Humans; D010147:Pain Measurement / Q000379:methods / Q000592:standards / Q000706:statistics & numerical data; D010349:Patient Compliance / Q000706:statistics & numerical data; D013375:Substance Withdrawal Syndrome / Q000453:epidemiology*
chemical_list: D000700:Analgesics