原文由 mhq111111 发表:
我也来加入讨论. 这个不单单是医学上的知识,很多科学实验都用得到。单盲就是只有医生知道用的是什么药而病人不知,双盲就是医患双方都不知道。happyjyl, is that true?
Absolutely.In a single blinded study the subjects do not know the study assignment while the investigators do. In a double-blinded study neither the investigators nor subjects know the assignments. In an unblinded study both subjects and investigators know the study assignments.