To the Editor.— I would like to register an ethical objection to the methodology used in the report by Lieberman et al1 regarding the prediction of relapse in schizophrenia. Briefly, their methods involved discontinuing antipsychotic medication in stable schizophrenics for up to one year and observing them for signs of relapse to judge the efficacy of a methylphenidate challenge in predicting relapse. While I would not have had any qualms about such a study in 1958, the situation is quite different in 1988. Few findings have been as well documented in medicine as the efficacy of antipsychotics in preventing relapse in schizophrenia.2,3 An investigator thus can be quite certain that discontinuing antipsychotics for up to a year will lead to relapse in most patients. This in fact was true in this study, in which only three of 39 patients did not relapse over a one-year period.One must
Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature
Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal
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