Diesfeldt H F
Stichting Verpleeghuizen Nederland, Psychogeriatrische Dienst, Laren.
Tijdschr Gerontol Geriatr. 1990 Aug;21(4):153-60.
Fifty-two patients (mean age 78.3; sd: 5.5; range 70-94) who were admitted to psychogeriatric day care because of memory problems and other cognitive deficits were tested with the Dutch form of Warrington's Recognition Memory Test (RMT). Forty-five mentally normal elderly (mean age 79.5; sd: 5.7; range 69-92) were also tested in order to establish the sensitivity and specificity of the test for the detection of memory impairment. Mentally normal subjects were mainly recruited from homes for the aged and were rated by the staff as free from any symptoms of dementia or other psychiatric disease. Using cut-off scores at the 98%-specificity level, the sensitivity of the RMT was 54% for the verbal part (Recognition Memory for Words, RMW) and 73% for the non-verbal part (Recognition Memory for Faces, RMF). Selection of cut-off scores with high sensitivity (96%) resulted in specificities of 62% and 71% for RMW and RMF, respectively. The RMF appears to be a more valid test for the detection of memory impairment than the RMW. Selection of cut-off scores is contingent on knowledge of the pretest or prior probability of memory impairment. A cut-off score with high sensitivity is recommended if impairment is strongly suspected, whereas high specificity is needed to verify the presence of impairments for which there is little clinical evidence.
52名因记忆问题和其他认知缺陷而入住老年精神日间护理中心的患者(平均年龄78.3岁;标准差:5.5;年龄范围70 - 94岁)接受了荷兰版的沃林顿识别记忆测试(RMT)。还对45名精神正常的老年人(平均年龄79.5岁;标准差:5.7;年龄范围69 - 92岁)进行了测试,以确定该测试在检测记忆障碍方面的敏感性和特异性。精神正常的受试者主要从养老院招募,工作人员评定他们没有任何痴呆或其他精神疾病的症状。使用98%特异性水平的临界值,RMT言语部分(词语识别记忆,RMW)的敏感性为54%,非言语部分(面部识别记忆,RMF)的敏感性为73%。选择高敏感性(96%)的临界值时,RMW和RMF的特异性分别为62%和71%。RMF似乎是比RMW更有效的检测记忆障碍的测试。临界值的选择取决于对记忆障碍的预测试或先验概率的了解。如果强烈怀疑有损伤,建议选择高敏感性的临界值;而对于几乎没有临床证据的损伤,需要高特异性来验证其存在。