Can obscure the true risk of certain adverse drug reactions

BMJ 1995; 310 doi: https://doi.org/10.1136/bmj.310.6992.1470 (Published 03 June 1995) Cite this as: BMJ 1995;310:1470
  1. K R Paterson
  1. Consultant physician Clinical Pharmacology, Royal Infirmary, Glasgow G4 0SF

    EDITOR,—The concept of events per person year is not only of limited utility in describing events in osteoporosis.1 In the study of adverse drug reactions the use of event rates can also be inappropriate and obscure the true risk of certain reactions.

    When an event is (or is believed to be) likely to occur at any stage during continuous treatment with a drug then an event rate with a time …

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