Intended for healthcare professionals


Sponsored trials do not necessarily give more-favourable results

BMJ 1999; 318 doi: (Published 26 June 1999) Cite this as: BMJ 1999;318:1762

This article has a correction. Please see:

  1. J N S Matthews, Professor of medical statistics (
  1. Department of Statistics, University of Newcastle, Newcastle upon Tyne NE1 7RU

    EDITOR—Wahlbeck and Adams report a review of randomised studies comparing clozapine with other antipsychotic drugs in schizophrenia.1 They argue thattrials that reported some connection with the manufacturer of clozapine (sponsored trials) were associated with more-favourable outcomes for the drug than were trials in which no such connection could be discerned (non-sponsored trials). Unfortunately, the information that the authors present does …

    View Full Text

    Log in

    Log in through your institution


    * For online subscription