双盲双盲,sigh......双盲means neither the person who administers the intervention (and collects) data, nor the subjects receiving the intervention can know exactly which of the treatment group the subj is assigned to. 这个定义是西医evidence based medicine里面创造的,如果中医要用这个词却不用人家原本的定义,那自然说不拢。。。。。