Evidence map›Paper›PMID 40604558›Full record

ArticleBMC geriatrics2025

Reliability and validity analysis of the Chinese version of the Quick Dementia Rating System (QDRS).

Hang Su, Jiehua Zhu, Yifan Wang, Jun Jin, Qihao Guo

Abstract readValidation Study
PubMed Full text at PMC Publisher
In one paragraph

Article in BMC geriatrics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

  1. Trial
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Hang SuDepartment of Gerontology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China.
Jiehua ZhuDepartment of Gerontology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China.
Yifan WangDepartment of Emergency, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China.
Jun JinDepartment of Gerontology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China. jinjun222@sjtu.edu.cn.
Qihao GuoDepartment of Gerontology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China. qhguo@sjtu.edu.cn.

Funding

National Natural Science Foundation of China 82171198Shanghai Municipal Science Technology Major Project 2018SHZDZX01The retrospective clinical research program of Shanghai Jiao Tong University Affiliated Sixth People's Hospital ynhg202117
6 · The paper itself

Abstract

backgroundAlzheimer's disease (AD) is one of the most common chronic diseases among the elderly. The Quick Dementia Rating System (QDRS) is a recognized cognitive assessment tool. The purpose of the current study was to evaluate the Chinese version of the QDRS (C-QDRS) as an early screening tool for elderly individuals.

methodsThe QDRS was translated into Chinese and its reliability and validity were assessed. A total of 366 people were recruited for the study, and all participants completed comprehensive neuropsychological tests. For reliability analysis, internal consistency was calculated using Cronbach's alpha coefficient. For validity analysis, the exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were carried out. Receiver operating characteristic (ROC) curve analyses were performed to evaluate the discriminative ability of the C-QDRS to identify cognitive impairment.

resultsC-QDRS scores increased progressively across groups: normal controls, objective subtle cognitive decline (obj-SCD), mild cognitive impairment (MCI), and AD. The C-QDRS demonstrated strong consistency, with a Cronbach's alpha of 0.923. The EFA showed a two-factor structure, and the CFA indicated that the model fit was satisfactory (χ

conclusionsThe C-QDRS is a precise and effective tool for screening both AD and preclinical AD in China.

Indexed as

Alzheimer DiseaseDementiaMental Status and Dementia TestsNeuropsychological TestsAgedAged, 80 and overChinaCognitive DysfunctionFemaleHumansMaleMiddle AgedReproducibility of ResultsAlzheimer's diseaseCognitive assessmentMild cognitive impairmentObjective subtle cognitive declineQuick Dementia Rating SystemScreening tool

Identifiers

PMID40604558
PMCPMC12220770

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.