Evidence map›Paper›PMID 37537656›Full record

ArticleAlzheimer's research & therapy2023

Prevalence of treated patients with Alzheimer's disease: current trends and COVID-19 impact.

Javier Olazarán, Cristóbal Carnero-Pardo, Juan Fortea, Pascual Sánchez-Juan, Guillermo García-Ribas, Félix Viñuela, Pablo Martínez-Lage, Mercè Boada

Open access · goldAbstract read
In one paragraph

Article in Alzheimer's research & therapy, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
4.0field-weighted citation impact, top 5% of its field
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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

  1. Pooled it
  2. National and subnational burden of neurological disorders in Iran, 1990 to 2021: results from the global burden of disease study 2021.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
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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

8 authors at 7 institutions in 1 country.

Javier OlazaránUnidad de Trastornos de La Memoria, HM Hospitales and Servicio de Neurología, HGU Gregorio Marañón, Madrid, Spain. javier@mariawolff.es.
Cristóbal Carnero-PardoFIDYAN Neurocenter, Granada, Spain.
Juan ForteaMemory Unit, Department of Neurology, Hospital de La Santa Creu I Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autónoma de Barcelona, Barcelona, Spain.
Pascual Sánchez-JuanNetwork Center for Biomedical Research in Neurodegenerative Diseases (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain.
Guillermo García-RibasHospital Universitario Ramón y Cajal, Madrid, Spain.
Félix ViñuelaInstituto Neurológico Andaluz, Hospital Victoria Eugenia, Seville y Unidad de Deterioro Cognitivo, Hospital Universitario Virgen Macarena, Sevilla, Spain.
Pablo Martínez-LageFundación Cita Alzheimer, Donostia-San Sebastian, Gipuzkoa, Spain.
Mercè BoadaNetwork Center for Biomedical Research in Neurodegenerative Diseases (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain.
Fundacion Centro De Investigacion De Enfermedades Neurologicas · ESFundacion CITA Alzheimer · ESHM Hospitales · ESHospital Universitario Ramón y Cajal · ESHospital Universitario Virgen Macarena · ESInstituto de Salud Carlos III · ESUniversitat Internacional de Catalunya · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThere are few updated studies on the prevalence and management of Alzheimer's disease (AD), which could be underdiagnosed or undertreated. The COVID-19 pandemic may have worsened the deficiencies in the diagnosis and treatment of these patients. Electronic medical records (EMR) offer an opportunity to assess the impact and management of medical processes and contingencies in the population.

objectiveTo estimate AD prevalence in Spain over a 6-year period, based on treated patients, according to usual clinical practice. Additionally, to describe the management of AD-treated patients and the evolution of that treatment during the 2020 COVID-19 pandemic.

methodsRetrospective study using the Spanish IQVIA EMR database. Patients treated with donepezil, galantamine, rivastigmine, and/or memantine were included in the study. Annual AD prevalence (2015-2020) was estimated and extrapolated to the national population level. Most frequent treatments and involved specialties were described. To assess the effect of COVID-19, the incidence of new AD cases in 2020 was calculated and compared with newly diagnosed cases in 2019.

resultsCrude AD prevalence (2015-2020) was estimated at 760.5 per 100,000 inhabitants, and age-standardized prevalence (2020) was 664.6 (male 595.7, female 711.0). Monotherapy was the most frequent way to treat AD (86.2%), in comparison with dual therapy (13.8%); rivastigmine was the most prescribed treatment (37.3%), followed by memantine (36.4%) and donepezil (33.0%). Rivastigmine was also the most utilized medication in newly treated patients (46.7%), followed by donepezil (29.8%), although donepezil persistence was longer (22.5 vs. 20.6 months). Overall, donepezil 10 mg, rivastigmine 9.5 mg, and memantine 20 mg were the most prescribed presentations. The incidence rate of AD decreased from 148.1/100,000 (95% confidence interval [CI] 147.0-149.2) in 2019 to 118.4/100,000 (95% CI 117.5-119.4) in 2020.

conclusionsThe obtained prevalence of AD-treated patients was consistent with previous face-to-face studies. In contrast with previous studies, rivastigmine, rather than donepezil, was the most frequent treatment. A decrease in the incidence of AD-treated patients was observed during 2020 in comparison with 2019, presumably due to the significant impact of the COVID-19 pandemic on both diagnosis and treatment. EMR databases emerge as valuable tools to monitor in real time the incidence and management of medical conditions in the population, as well as to assess the health impact of global contingencies and interventions.

Indexed as

Alzheimer DiseaseCOVID-19Cholinesterase InhibitorsDonepezilFemaleGalantamineHumansIndansMaleMemantinePandemicsPhenylcarbamatesPiperidinesPrevalenceRetrospective StudiesRivastigmineCholinesterase InhibitorsDonepezilGalantamineIndansMemantinePhenylcarbamatesPiperidinesRivastigmineAlzheimer diseaseCholinesterase inhibitorsIncidenceMemantinePrevalenceSpainTreatment

Identifiers

PMID37537656
PMCPMC10401753
OpenAlexW4385546975

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.