If 20% of the cannabis tests return false positives, that makes them almost entirely useless Why is this? Let's talk sensitivity and specificityhttps://twitter.com/DrBradMcKay/status/1131731525114839041 …
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So my “roll of the dice” (1 in 6) was pretty close to your estimation of 1 in 7
And of course there are other issues about “use of cannabis” vs “impairment”. Either way, not good enough for prosecution! -
Oh absolutely, I have a friend who wrote get thesis on roadside drug testing and concluded it was basically a waste of time+money!
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