This is the story of my first incursion in to the fantasy world of alternative medicine.
I was asked by the producer of a television programme (QED) to look at a paper that claimed a beneficial effect of homeopathic treatment of fibrositis (Fisher, P., Greenwood, A., Huskisson, E. C., Turner, P., & Belon, P. (1989). Effect of homoeopathic treatment on fibrositis (primary fibromyalgia) British Medical Journal 299, 365-366.) [download pdf].
The homeopath, Peter Fisher, was kind enough to give me the raw data for re-analysis. Curiously. the two medical co-authors (apparently guest authors), neither of them homeopath, were reluctant to hand over the raw data.
It appeared from the paper that the crossover trial had been analysed incorrectly (each patient had been counted twice). When the results were analysed correctly, no significant effects were found.
Astonishingly, the British Medical Journal declined to publish the correction, but their rival, the Lancet, did so with alacrity (Colquhoun, D. (1990). Reanalysis of a clinical trial of a homoeopathic treatment of fibrositis. Lancet 336, 441-442.).[ download pdf ].
Incidentally, the result of this exercise, despite the fact that it had been commissioned by the television producer, was entirely misrepresented in the final TV programme. The producer was evidently less interested in discovering the truth, than in giving the public what he thought they wanted, i.e. wishful thinking. In this he must have been successful, because the first letter that I received after the programme was from a lady in Fulham, who asked me to recommend a source of homeopathic flu jabs for her cat.
It’s interesting, but not surprising that this correction has been universally ignored by advocates of homeopathy. Whether this is incompetence or dishonesty is impossible to say.
[…] surely some mistake here? The problems with this paper have already been described above. Fisher et al. had made a naive mistake in their statistical analysis, and in fact the homeopathic […]
[…] this is a similar situation to that recounted by Professor David Colquhoun when he recognised a substantial flaw in a homeopathy paper and helpfully published his reanalysis that corrected the aut…. (HolfordWatch has no idea if Colquhoun ever received the grateful thanks of the authors for […]
[…] However the page about fibromyalgia still mentions homeopathy favourably. And it still fails to refer to my reanalysis of one of the positive trials which revealed a simple statistical mistake. […]
[…] This post was mentioned on Twitter by Teobesta. Teobesta said: RT @david_colquhoun: QED asked me to check Fisher's fibrositis data Found mistake in stats but prog didn't mention http://bit.ly/hbon9b 2/2 […]