Questionnaires were sent to approximately 500 general practioners in five areas of one National Health Service Region; there was a 52% response. Certain characteristics of each general practitioner, which were collected from the questionnaire and medical lists, were used to assess how information was used by different ‘types’ of general practitioner. Generally, sources of information emanating from the pharmaceutical industry are used more to introduce the new product, while the ‘professional’ sources such as medical journals are used more to evaluate it. Younger doctors used Drug and Therapeutics Bulletin more than did their colleagues, and single-practice doctors found the representative to be more useful than did joint-practice doctors.
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