Schwartz Richard H., MD
To the Editors: In a letter reporting the preliminary results of an anonymous survey of members of the American Society of Clinical Oncology (ASCO), Doblin and Kleiman (1) acknowledge the "possibility of response bias" and that their results "only roughly estimate the views of oncologists." In fact, 57% of those surveyed did not return their questionnaires, and the number of questionnaires returned unanswered is not stated. Further, the authors chose not to include respondents who filled out the survey but who indicated no opinion on the question (30% of the respondents); instead they stated that "of the respondents who expressed
Richard H. S. Medical Use of Marijuana. Ann Intern Med. 1992;117:268–269. doi: 10.7326/0003-4819-117-3-268_2
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Published: Ann Intern Med. 1992;117(3):268-269.
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