this post was submitted on 09 May 2025
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IDK enough about statistics to really interpret these results but ... I have some concerns.
If these results are accurate and herbicides are responsible I would've thought the stuff would be outlawed. Herbicides are used in a vast range of applications. The fallout would be like asbestos or something.
That said, 126% increased odds sounds like a lot but if the odds are 1 in 1000 and the study size contains only 9000 individuals then the usual odds would be 9 cases but 10 cases would represent a 900% increase.
I also don't understand the drinking water angle. Do people really have private wells from which they draw drinking water ? Enough people to be statistically significant?
Seems like it could also be that rich old people are more likely to get Parkinsons diagnosed than young people or poor old people, and also more likely to live near a golf course.
Addressed by the paper - they included age and income as control variables. The relationship b/w proximity and PD persists.