Identifying dementia using medical data linkage in a longitudinal cohort study: Lothian Birth Cohort 1936.
Identifying dementia using medical data linkage in a longitudinal cohort study: Lothian Birth Cohort 1936.
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DOI:
10.1186/s12888-023-04797-7
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发表时间:
2023-05-01
期刊:
影响因子:
4.4
通讯作者:
中科院分区:
文献类型:
--
作者:
The Lothian Birth Cohort 1936 (LBC1936) is a longitudinal study of ageing with well-characterised assessments, but until now, it has relied on self-report or proxies for dementia such as cognitive tests. Our aims were twofold: a) to describe a framework for identifying dementia in a cohort study. b) to report the age-specific incidence and prevalence of all-cause dementia and dementia subtypes in 865 individuals in the LBC1936. Electronic Health Records (EHR) of all participants were reviewed, and relevant information was extracted to form case vignettes for everyone with any record of cognitive dysfunction. The EHR data sources include hospital and clinic letters, general practitioner and hospital referrals, prescribed medications, imaging and laboratory results. Death certificate data were obtained separately. Clinician assessments were performed when there was concern about a participant's cognition. A diagnosis of probable dementia, possible dementia, or no dementia was agreed upon by a consensus diagnostic review board, comprised of a multidisciplinary team of clinical dementia experts who reviewed case vignettes and clinician assessment letters. For those with probable dementia, a subtype was also determined, where possible. We compared the agreement between our newly ascertained dementia diagnoses with the existing self-reported dementia diagnoses. Self-reported dementia diagnoses were positive in only 17.8% of ascertained dementia diagnoses. The EHR review identified 163/865 (18.8%) individuals as having cognitive dysfunction. At the consensus diagnostic review board, 118/163 were diagnosed with probable all-cause dementia, a prevalence of 13.6%. Age-specific dementia prevalence increased with age from 0.8% (65–74.9 years) to 9.93% (85–89.9 years). Prevalence rates for women were higher in nearly all age groups. The most common subtype was dementia due to Alzheimer disease (49.2%), followed by mixed Alzheimer and cerebrovascular disease (17.0%), dementia of unknown or unspecified cause (16.1%), and dementia due to vascular disease (8.5%). We present a robust systematic framework and guide for other cohort teams wanting to ascertain dementia diagnoses. The newly ascertained dementia diagnosis provides vital data for further analyses of LBC1936 to allow exploration of lifecourse predictors of dementia. The online version contains supplementary material available at 10.1186/s12888-023-04797-7.
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影响因子:
168.9
作者:
Matthews, Fiona E.;Arthur, Antony;Barnes, Linda E.;Bond, John;Jagger, Carol;Robinson, Louise;Brayne, Carol
通讯作者:
Brayne, Carol
影响因子:
4.1
作者:
Deary IJ;Gow AJ;Taylor MD;Corley J;Brett C;Wilson V;Campbell H;Whalley LJ;Visscher PM;Porteous DJ;Starr JM
通讯作者:
Starr JM
影响因子:
4.4
作者:
Sibbett, Ruth A.;Russ, Tom C.;Starr, John M.
通讯作者:
Starr, John M.
影响因子:
2.4
作者:
Hsieh, Sharpley;Schubert, Samantha;Hodges, John R.
通讯作者:
Hodges, John R.
影响因子:
7.7
作者:
Taylor AM;Pattie A;Deary IJ
通讯作者:
Deary IJ