Estimate at your peril: Imputation methods for patient withdrawal can bias efficacy outcomes in chronic pain trials using responder analyses

Moore, R. Andrew ; Straube, Sebastian ; Eccleston, Christopher ; Derry, Sheena ; Aldington, Dominic ; Wiffen, Philip ; Bell, Rae F. ; Hamunen, Katri ; Phillips, Ceri ; McQuay, Henry

Pain (Amsterdam), 2012-02, Vol.153 (2), p.265-268 [Periódico revisado por pares]

Philadelphia, PA: Elsevier B.V

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