Evidence map›Paper›PMID 32709639›Full record

ArticleBMJ open2020

Blood pressure and cognitive function across the eighth decade: a prospective study of the Lothian Birth Cohort of 1936.

Drew Altschul, John Starr, Ian Deary

Abstract read
In one paragraph

Article in BMJ open, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. The Power of Birth Cohorts to Study Risk Factors for Cognitive Impairment.Current neurology and neuroscience reports · 2022
    Review
  2. 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

3 authors.

Drew AltschulDepartment of Psychology, University of Edinburgh, Edinburgh, UK drew.altschul@ed.ac.uk.ORCID 0000-0001-7053-4209
John StarrGeriatric Medicine, Royal Victoria Hospital, Edinburgh, UK.
Ian DearyDepartment of Psychology, University of Edinburgh, Edinburgh, UK.

Funding

Biotechnology and Biological Sciences Research CouncilMedical Research Council G0700704Medical Research Council MC_PC_17209Medical Research Council MR/K026992/1
6 · The paper itself

Abstract

objectivesWe investigated the associations among blood pressure and cognitive functions across the eighth decade, while accounting for antihypertensive medication and lifetime stability in cognitive function.

designProspective cohort study.

settingThis study used data from the Lothian Birth Cohort 1936 (LBC1936) study, which recruited participants living in the Lothian region of Scotland when aged 70 years, most of whom had completed an intelligence test at age 11 years.

participants1091 members of the LBC1936 with assessments of cognitive ability in childhood and older adulthood, and blood pressure measurements in older adulthood. PRIMARY AND SECONDARY OUTCOME MEASURES: Participants were followed up at ages 70, 73, 76 and 79, and latent growth curve models and linear mixed models were used to analyse both cognitive functions and blood pressure as primary outcomes.

resultsBlood pressure followed a quadratic trajectory in the eighth decade: on average blood pressure rose in the first waves and subsequently fell. Intercepts and trajectories were not associated between blood pressure and cognitive functions. Women with higher early-life cognitive function generally had lower blood pressure during the eighth decade. Being prescribed antihypertensive medication was associated with lower blood pressure, but not with better cognitive function.

conclusionsOur findings indicate that women with higher early-life cognitive function had lower later-life blood pressure. However, we did not find support for the hypothesis that rises in blood pressure and worse cognitive decline are associated with one another in the eighth decade.

Indexed as

CognitionAdultAgedBlood PressureChildFemaleHumansIntelligence TestsProspective StudiesScotlandepidemiologygeriatric medicinehypertensionold age psychiatry

Identifiers

PMID32709639
PMCPMC7380861

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.