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BMJ 2006;332:666-667 (18 March), doi:10.1136/bmj.332.7542.666-c
| The first 150 words of the full text of this article appear below. |
EDITORAlthough Loke et al concluded that case reports in pharmacovigilance have limited value,1 case reports or series are valuable as hypothesis generating papers, which benefit clinicians and patients. The number of follow-up studies is only one outcome by which to judge the value of case reports or series, but other outcomes may be more difficult to study.
Although case reports are valuable in pharmacovigilance, hypothesis testing studies are necessary and I agree with Vandenbroucke that a more consistent scheme is needed.2 An important question is, where will funding for such studies come from? Pharmaceutical companies may have little incentive to further investigate adverse reactions and if funding is provided there may be conflicting interests. For different reasons, governments may also be reluctant to fund pharmacoepidemiology studies.3
In New Zealand, the government funded intensive medicines monitoring programme (IMMP) performs hypothesis-testing studies which further investigate adverse drug reactions, including calculating
Mira Harrison-Woolrych, director
Intensive Medicines Monitoring Programme, University of Otago, Dunedin, New Zealand Mira.harrison-woolrych@stonebow.otago.ac.nz