Young R C, Manley M W, Alexopoulos G S
J Am Geriatr Soc. 1985 Apr;33(4):253-7. doi: 10.1111/j.1532-5415.1985.tb07112.x.
"I don't know" responses were recorded during administration of the Mini-Mental State Examination in elderly patients with primary degenerative dementia and primary major depression. More "I don't know" responses were given by patients with degenerative dementia; however, demented patients did not differ overall from depressives in the proportion of Not Correct responses consisting of "I don't know" responses. These responses were positively correlated with age and with Hollingshead education and social class scores in depressives but not in demented patients. A higher proportion of Not Correct responses consisting of "I don't know" responses needs to be demonstrated in depressive pseudomentia than in degenerative dementia if this clinical sign is to be used in helping to differentiate the two disorders.
在对患有原发性退行性痴呆和原发性重度抑郁症的老年患者进行简易精神状态检查期间，记录了“我不知道”的回答。退行性痴呆患者给出的“我不知道”回答更多；然而，痴呆患者在由“我不知道”回答组成的错误回答比例上与抑郁症患者总体并无差异。这些回答在抑郁症患者中与年龄以及霍林斯黑德教育和社会阶层得分呈正相关，但在痴呆患者中并非如此。如果要将这一临床体征用于帮助区分这两种疾病，那么抑郁性假性痴呆中由“我不知道”回答组成的错误回答比例需要高于退行性痴呆。
