不知道这批受试者当中多大比例有症状。也不知测试假阳性多高。The sampling may not be random and

the result too sensitive to selection bias.

所有跟帖： 

• 1）kit sensitivity is about at 60% or 91%, specificity is 99.5%. -三丝- ♂ (0 bytes) () 04/18/2020 postreply 05:27:40

• 假阴性的会多 （80%）。sampling is biased towards facebook 白人女子组。 -三丝- ♂ (0 bytes) () 04/18/2020 postreply 05:30:30