Evidence map›Paper›PMID 27884130›Full record

ArticleBMC neurology2016

A profile of The Clinical Course of Cognition and Comorbidity in Mild Cognitive Impairment and Dementia Study (The 4C study): two complementary longitudinal, clinical cohorts in the Netherlands.

Weiqi Liao, Renske E G Hamel, Marcel G M Olde Rikkert, Saskia M Oosterveld, Pauline Aalten, Frans R J Verhey, Philip Scheltens, Nicole Sistermans, Yolande A L Pijnenburg, Wiesje M van der Flier and 2 more

Abstract read
In one paragraph

Article in BMC neurology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing 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

10 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. A Qualitative Exploration of the Needs of Community-Dwelling Patients Living with Moderate Dementia.International journal of environmental research and public health · 2021
    Article
  6. Article
  7. Article
  8. Cognitive and functional progression of dementia in two longitudinal studies.International journal of geriatric psychiatry · 2019
    Article
  9. Review
  10. Article
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

12 authors.

Weiqi LiaoRadboud Institute of Health Sciences, Department of Geriatric Medicine & Radboudumc Alzheimer Centre, Radboud University Medical Center, PO Box 9109, (House post 925), 6500 HB, Nijmegen, The Netherlands.
Renske E G HamelAlzheimer Centre Limburg, School for Mental Health & Neuroscience, Maastricht University Medical Centre, Maastricht, The Netherlands.
Marcel G M Olde RikkertDonders Institute for Brain, Cognition and Behaviour, Department of Geriatric Medicine & Radboudumc Alzheimer Centre, Radboud University Medical Center, Nijmegen, The Netherlands.
Saskia M OosterveldRadboud Institute of Health Sciences, Department of Geriatric Medicine & Radboudumc Alzheimer Centre, Radboud University Medical Center, PO Box 9109, (House post 925), 6500 HB, Nijmegen, The Netherlands.
Pauline AaltenAlzheimer Centre Limburg, School for Mental Health & Neuroscience, Maastricht University Medical Centre, Maastricht, The Netherlands.
Frans R J VerheyAlzheimer Centre Limburg, School for Mental Health & Neuroscience, Maastricht University Medical Centre, Maastricht, The Netherlands.
Philip ScheltensAlzheimer Center & Department of Neurology, VU University Medical Center, Neuroscience Campus, Amsterdam, The Netherlands.
Nicole SistermansAlzheimer Center & Department of Neurology, VU University Medical Center, Neuroscience Campus, Amsterdam, The Netherlands.
Yolande A L PijnenburgAlzheimer Center & Department of Neurology, VU University Medical Center, Neuroscience Campus, Amsterdam, The Netherlands.
Wiesje M van der FlierAlzheimer Center & Department of Neurology, Department of Epidemiology and Biostatistics, VU University Medical Center, Amsterdam, The Netherlands.
Inez H G B RamakersAlzheimer Centre Limburg, School for Mental Health & Neuroscience, Maastricht University Medical Centre, Maastricht, The Netherlands.
René J F MelisRadboud Institute of Health Sciences, Department of Geriatric Medicine & Radboudumc Alzheimer Centre, Radboud University Medical Center, PO Box 9109, (House post 925), 6500 HB, Nijmegen, The Netherlands. rene.melis@radboudumc.nl.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHeterogeneous disease trajectories of mild cognitive impairment (MCI) and dementia are frequently encountered in clinical practice, but there is still insufficient knowledge to understand the reasons and mechanisms causing this heterogeneity. In addition to correlates of the disorder, patient characteristics such as their health status, social environment, comorbidities and frailty may contribute to variability in trajectories over time. The current paper outlines the study design and the study population of and provides an overview of the data collected in the Clinical Course of Cognition and Comorbidity in Mild Cognitive Impairment (4C-MCI cohort, n = 315) and Dementia (4C-Dementia cohort, n = 331) Study.

methodsThe two complementary longitudinal cohorts part of the 4C study began enrolment in March 2010. Participants were prospectively recruited from three collaborating Dutch Alzheimer Centers, with three annual follow-up assessments after baseline. Extensive neuropsychological assessments, and detailed profiling of comorbidities, health and frailty at each follow up were the key features of the 4C study. As such, the 4C study was designed to study if and how patients' comorbidities and frailty are associated with the course of MCI and dementia measured with a comprehensive and multidimensional set of outcomes including cognition, daily functioning, quality of life, behavioral disturbances, caregiver burden, institutionalization and death and whether the effects of medical health and frailty differ between MCI and dementia stages of cognitive disorders.

conclusionSampled in a clinical setting, the 4C study complements population-based studies on neurodegenerative disorders in terms of the type of assessment (e.g. comorbidity, frailty, and functional status were repeatedly assessed). The 4C study complements available clinical cohorts of MCI and dementia patients, because the exclusion criteria were kept to a minimum, to obtain a sample that is representative for the average patient visiting a memory clinic.

Indexed as

AgedAged, 80 and overCognitionCognition DisordersCognitive DysfunctionComorbidityDementiaFemaleHumansLongitudinal StudiesMaleMemoryMiddle AgedNetherlandsNeuropsychological TestsQuality of LifeCognitionComorbidityDementiaDisease progressionFrailtyMild Cognitive Impairment (MCI)

Identifiers

PMID27884130
PMCPMC5123233

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Registered trials

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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.