Letters

The two study groups may not be comparable

BMJ 1995; 311 doi: https://doi.org/10.1136/bmj.311.6996.56a (Published 01 July 1995) Cite this as: BMJ 1995;311:56
  1. David Gunnell
  1. Lecturer Department of Epidemiology and Public Health Medicine, Health Care Evaluation Unit, University of Bristol, Bristol BS8 2PR

    EDITOR,--Susan S Jick and colleagues conclude their detailed study of suicide and prescribing of antidepressants by stating that their data are consistent with the hypothesis that those who are determined to commit suicide will do so even if one particular means (drug overdose) is made less available.1 Such a view is also supported by J Guy Edwards in his accompanying editorial.2 The data presented do not support these assertions.

    In Jick and colleagues' study overall crude suicide rates were twice as high in the group who took other antidepressants (14.9/10000 person years) as in those taking tricyclic antidepressants (7.4/10000). This suggests that there may be differences between …

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