Evidence map›Paper›PMID 42789572›Full record

Observational studyPloS one2026

Age at dementia diagnosis, subtype associations, and neuroimaging differentiation in Bangladesh: The CARED study.

Redoy Ranjan, Ghulam Kawnayn, Md Abdullah Yusuf, Mohammad Nur Uddin, Mim Tanzila Mamun, Alif Al Mamun, Shadad Hossain, Mohammad Sayeed Hassan, Nafiz Imtiaz, Maliha Hakim

Abstract readObservational Study
In one paragraph

Observational study in PloS one, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

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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

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3 · Its place in the literature

Who cites it

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4 · The record

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5 · Who and what money

Authors and funding

10 authors.

Redoy RanjanDepartment of Cardiac Surgery, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh.ORCID https://orcid.org/0000-0003-1927-5023
Ghulam KawnaynDepartment of Neurology, Combined Military Hospital, Chittagong, Bangladesh.ORCID https://orcid.org/0009-0005-2490-640X
Md Abdullah YusufDepartment of Microbiology, National Institute of Neurosciences and Hospital, Dhaka, Bangladesh.ORCID https://orcid.org/0000-0002-8551-7185
Mohammad Nur UddinDepartment of Neurology, National Institute of Neurosciences and Hospital, Dhaka, Bangladesh.
Mim Tanzila MamunDepartment of Medicine, Chottogram Army Medical College, Chittagong, Bangladesh.
Alif Al MamunDepartment of Neuroscience, Macquarie University, Sydney, Australia.
Shadad HossainDepartment of Neurology, National Institute of Neurosciences and Hospital, Dhaka, Bangladesh.
Mohammad Sayeed HassanDepartment of Neurology, National Institute of Neurosciences and Hospital, Dhaka, Bangladesh.
Nafiz ImtiazDepartment of Psychiatry, North East London NHS Foundation Trust, London, United Kingdom.ORCID https://orcid.org/0009-0001-5593-4455
Maliha HakimDepartment of Neurology, National Institute of Neurosciences and Hospital, Dhaka, Bangladesh.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundEvidence on age at diagnosis of dementia and differentiation of dementia subtypes in Bangladesh is limited. This study aimed to determine age at diagnosis, examine factors associated with dementia subtypes, and evaluate the discriminatory utility of neuroimaging scales in a Bangladeshi clinical population.

methodsThe Community Awareness and Research on Early Dementia (CARED) study was a cross-sectional observational study conducted 2019-2024 at a tertiary care centre in Bangladesh. A total of 658 adults presenting with cognitive impairment, undergoing evaluation for suspected dementia were included. Diagnoses were established using DSM-5 criteria by a multidisciplinary team. Patients were categorized into dementia subtypes. Pseudodementia was retained as separate comparator group. Multivariable regression analyses were performed to identify factors associated with dementia subtypes. Receiver operating characteristic (ROC) curve analyses were used to assess the discriminatory performance of neuroimaging scales.

resultsAmong 658 patients, Alzheimer's-related dementia (ARD) accounted for 51.7% of cases. The mean age at diagnosis was significantly higher in ARD compared with non-Alzheimer's-related dementia (nARD) (67.7 ± 10.8 vs 64.3 ± 11.4 years, P < 0.001). In multivariable analysis, nARD was associated with an earlier age at diagnosis by 4.3 years compared with ARD. Vascular dementia was associated with hypertension, OR 4.2 (95% CI 1.1-16.6), P = 0.04, and smoking, OR 13.1 (95% CI 1.6-103.3), P = 0.01. Neuroimaging scales demonstrated variable discriminatory performance. Medial temporal atrophy showed good discrimination for ARD (AUROC 0.752), while Fazekas scores demonstrated good performance for vascular dementia (AUROC 0.838) and mixed dementia (AUROC 0.836). Global cortical atrophy showed moderate discriminatory ability for frontotemporal dementia (AUROC 0.659).

conclusionsAge at diagnosis varied across dementia subtypes in this Bangladeshi clinical cohort, with non-Alzheimer's diagnosed earlier than Alzheimer's. Structured MRI visual rating scales showed variable subtype-specific discriminatory performance, suggesting that they may provide adjunctive information for dementia subtype differentiation when interpreted alongside multidisciplinary clinical assessment.

Indexed as

Alzheimer DiseaseDementiaNeuroimagingAgedAge FactorsBangladeshBrainCross-Sectional StudiesDementia, VascularFemaleHumansMagnetic Resonance ImagingMaleMiddle AgedROC Curve

Identifiers

PMID42789572
PMCPMC13614553

What Socratic holds

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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 Socratic graph.