Validity of the clinical dementia rating for early screening of Alzheimer's disease in community
10.3760/cma.j.cn371468-20210401-00178
- VernacularTitle:临床痴呆评定量表早期社区筛查阿尔茨海默病的效度
- Author:
Xiaojuan JIANG
1
;
Yue WU
;
Xiaowei LIU
;
Li TANG
;
Wei FENG
;
Zaohuo CHENG
Author Information
1. 南京医科大学附属无锡精神卫生中心 214151
- Keywords:
Clinical dementia rating;
Alzheimer's disease;
Early screening;
Validity
- From:
Chinese Journal of Behavioral Medicine and Brain Science
2021;30(6):554-559
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To verify the validity of the clinical dementia rating(CDR) for early screening of Alzheimer's disease in the community.Methods:One thousand two hundred and eighty-one community volunteers (580 males and 701 females) came to hospital for clinical interviews, laboratory tests and a series of psychological assessment, including CDR, brief elderly cognitive screening inventory (BECSI), quickly cognitive screening scale for elderly (QCSS-E), mini-mental state examination (MMSE) and core neurocognitive test (CNT). According to clinical interview, assessment and DSM-5 criteria, 623 normal cognition, 570 mild cognitive impairment (MCI) and 88 dementia with Alzheimer's type (DAT) were screened.Results:(1) The results of CDR-global scores (CDR-GS)in the community volunteers showed that 506 (39.5%) scored 0, 688 (53.7%) scored 0.5, 72 (5.6%) scored 1, and 15 (1.2%) scored 2 or more.(2) There were significantly differences on the BECSI score, QCSS-E score, MMSE score and CNT score among people with different CDR-GS ( P<0.01). In the total or dementia sample, CDR-sum of box score (CDR-SB) and CDR-GS were significantly correlated with BECSI score ( r=0.577-0.639), QCSS-E score ( r=-0.586--0.680), MMSE score ( r=-0.570--0.764) and CNT score ( r=-0.244--0.357)( P<0.01). (3) The accuracy (95.8%) and specificity (99.8%) of the CDR-GS screening DAT were slightly higher than those of the CDR-SB(91.1%, 92.0%), and its sensitivity (65.9%) was lower than that of CDR-SB(82.5%). The accuracy (72.6%), sensitivity (81.9%) and specificity (64.0%)of the CDR-GS were close to those of CDR-SB(72.1%, 83.3%, and 61.8% respectively) in screening MCI. Conclusion:The CDR can be used for screening of AD in community populations.CDR-GS and CDR-SB have their own advantages, and combination of both advantages can improve the screening efficiency.
