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On Wed 11 Dec, J.R. Bruman wrote: > To Brian Collins: > > As I recall, the articles I saw said nothing about the longevity > of smokers among PWP, but they did say that either (a) heavy > smokers had disproportionately low incidence of PD, or (b) PWP > included a disproportionately low number of heavy smokers. > > Before you rush out for a carton of Marlboros, note that the > above results don't necessarily indicate a cause/effect relation. > They could mean only, for example, that aversion to smoking and > susceptibility to PD are linked genetic traits, or conversely, > that craving tobacco and resistance to PD are somehow linked, > Researchers did, BTW, remark that nicotine is not the tobacco > component involved here, > > Cheers, > Joe > > J. R. Bruman (818) 789-3694 > 3527 Cody Road > Sherman Oaks CA 91403 > Your recollection is right, Joe; the conclusion which I quoted was the interpretation of the person who told me the story, and not the conclusion of the original report. I am quite sure, however that it was the original report which was flawed. I think it had to do with the fact that in studies of this sort, covering a long timescale, the sample group (and the control group) become depleted for reasons not associated with the experiment. It was in compensating for this that the mistake was made. -- Brian Collins <[log in to unmask]>