Evidence map›Paper›PMID 27352934›Full record

ArticleInternational psychogeriatrics2016

Simultaneous temporal trends in dementia incidence and prevalence, 2005-2013: a population-based retrospective cohort study in Saskatchewan, Canada.

Julie G Kosteniuk, Debra G Morgan, Megan E O'Connell, Andrew Kirk, Margaret Crossley, Gary F Teare, Norma J Stewart, Vanina Dal Bello-Haas, Lesley McBain, Haizhen Mou and 3 more

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Article in International psychogeriatrics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
–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

27 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Protective effects ofNutrition research and practice · 2026
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  7. Secular trends in the prevalence of dementia based on a community-based complete enumeration in Japan: the Nakayama Study.Psychogeriatrics : the official journal of the Japanese Psychogeriatric Society · 2022
    Article
  8. Article
  9. A New Look at Cohort Trend and Underlying Mechanisms in Cognitive Functioning.The journals of gerontology. Series B, Psychological sciences and social sciences · 2021
    Article
  10. The APOE ε4 exerts differential effects on familial and other subtypes of Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2020
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  11. Article
  12. Scopolamine-Induced Memory Impairment in Mice: Neuroprotective Effects ofInternational journal of Alzheimer's disease · 2020
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  13. Secular trends in cognitive trajectories of diverse older adults.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2019
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  14. Article
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  16. Article
  17. Time Trend in Persistent Cognitive Decline: Results From the Longitudinal Aging Study Amsterdam.The journals of gerontology. Series B, Psychological sciences and social sciences · 2018
    Article
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

13 authors.

Julie G KosteniukCanadian Centre for Health and Safety in Agriculture,University of Saskatchewan,Saskatoon,Saskatchewan,Canada.
Debra G MorganCanadian Centre for Health and Safety in Agriculture,University of Saskatchewan,103 Hospital Drive,Saskatoon,Saskatchewan,Canada.
Megan E O'ConnellDepartment of Psychology,University of Saskatchewan,Saskatoon,Saskatchewan,Canada.
Andrew KirkDivision of Neurology,College of Medicine,University of Saskatchewan,Saskatoon,Saskatchewan,Canada.
Margaret CrossleyDepartment of Psychology (Professor Emerita),University of Saskatchewan,Saskatoon,Saskatchewan,Canada.
Gary F TeareSaskatchewan Health Quality Council,Saskatoon,Saskatchewan,Canada.
Norma J StewartCollege of Nursing,University of Saskatchewan,Saskatoon,Saskatchewan,Canada.
Vanina Dal Bello-HaasSchool of Rehabilitation Science,McMaster University,Hamilton,Ontario,Canada.
Lesley McBainIndigenous Studies,First Nations University,Prince Albert,Saskatchewan,Canada.
Haizhen MouJohnson Shoyama Graduate School of Public Policy,University of Saskatchewan,Saskatoon,Saskatchewan,Canada.
Dorothy A ForbesFaculty of Nursing,University of Alberta,Edmonton,Alberta,Canada.
Anthea InnesFaculty of Social Sciences,University of Stirling,Stirling,UKandSalford Institute for Dementia,University of Salford,Manchester,UK.
Jacqueline M QuailSaskatchewan Health Quality Council,Saskatoon,Saskatchewan,Canada.

Funding

CIHR ACH 93185
6 · The paper itself

Abstract

backgroundOriginal studies published over the last decade regarding time trends in dementia report mixed results. The aims of the present study were to use linked administrative health data for the province of Saskatchewan for the period 2005/2006 to 2012/2013 to: (1) examine simultaneous temporal trends in annual age- and sex-specific dementia incidence and prevalence among individuals aged 45 and older, and (2) stratify the changes in incidence over time by database of identification.

methodsUsing a population-based retrospective cohort study design, data were extracted from seven provincial administrative health databases linked by a unique anonymized identification number. Individuals 45 years and older at first identification of dementia between April 1, 2005 and March 31, 2013 were included, based on case definition criteria met within any one of four administrative health databases (hospital, physician, prescription drug, and long-term care).

resultsBetween 2005/2006 and 2012/2013, the 12-month age-standardized incidence rate of dementia declined significantly by 11.07% and the 12-month age-standardized prevalence increased significantly by 30.54%. The number of incident cases decreased from 3,389 to 3,270 and the number of prevalent cases increased from 8,795 to 13,012. Incidence rate reductions were observed in every database of identification.

conclusionsWe observed a simultaneous trend of decreasing incidence and increasing prevalence of dementia over a relatively short 8-year time period from 2005/2006 to 2012/2013. These trends indicate that the average survival time of dementia is lengthening. Continued observation of these time trends is warranted given the short study period.

Indexed as

AgedAge FactorsDatabases, FactualDementiaFemaleHumansIncidenceLong-Term CareMaleMiddle AgedPractice Patterns, Physicians'PrevalenceRetrospective StudiesSaskatchewanSex Factorsadministrative datadementiadiagnosisepidemiologyhospitallong-term carephysicianprescription drug

Identifiers

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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.