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Wendy: Concerning the abstract on environmental and exposure data ... in a case control study of PD. The figures are interesting, but there doesn't seem to be a statistical interpretation included. I.e., which ones were significantly correlated with PD onset? Since the t values are given, one would have expected that the significance would also have been quoted, unless there is some reason not to.. although one cannot draw conclusions on the significance of more than one variable in a set because of lack of independence. Concerning the abstract on PD and brain levels of organochlorine pesticides.. This is very interesting and useful data. My brother has suffered from PD for about 10 years (age 65), and his background is similar to the "average" occupational background indicated in the first study mentioned above. There is a strong suspicion that his exposure to Dieldrin may have resulted in contracting PD. This helps to confirm that suspicion. Thanks very much for the information! NPA ---------------------------------------------------------- Norm Archer Phone 905-525-9140 Ext. 23944 Management Science & FAX 905-521-8995 Information Systems Email [log in to unmask] McMaster University School of Business Hamilton, Ontario L8S 4M4 Canada