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In the Stanford study, they used blood samples that were taken before the epidemic to determine the true/false negative rate, and blood from patients that teste
by jupp0r 7y ago
In the Stanford study, they used blood samples that were taken before the epidemic to determine the true/false negative rate, and blood from patients that tested PCR positive in the past to determine true/false positive rate.
- loser777 7y ago...which has been characterized as being analyzed in a highly suspect way [1], where only point estimates of the specificity were used. [1] https://news.ycombinator.com/item?id=22924118 https://news.ycombinator.com/item?id=22924118
- longtimegoogler 7y agoThe Stanford study didn't properly include the specificity in their predictions. See here, https://statmodeling.stat.columbia.edu/2020/04/19/fatal-flaws-in-stanford-study-of-coronavirus-prevalence/ https://statmodeling.stat.columbia.edu/2020/04/19/fatal-flaw...