prior odds are 1:99 against, posterior odds are 1:9.9, therefore LR of positive is 10. I may have miscommunicated. I meant posterior when I said “positive rate” (“cancer rate given positive” was my interpretation) I can see how it is better parsed as “rate that you test positive”, which is something else. Sorry for the confusion.
prior odds are 1:99 against, posterior odds are 1:9.9, therefore LR of positive is 10. I may have miscommunicated. I meant posterior when I said “positive rate” (“cancer rate given positive” was my interpretation) I can see how it is better parsed as “rate that you test positive”, which is something else. Sorry for the confusion.