Evidence map›Paper›PMID 34091444›Full record

ArticleAging2021

Association of changes in self-reported sleep duration with mild cognitive impairment in the elderly: a longitudinal study.

Xiyan Wang, Yan Chen, Bixuan Yue, Sifan Li, Qitong Liu, Qiaoyu Li, Lin Li, Jiangwei Sun

Open access · hybridAbstract read
In one paragraph

Article in Aging, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
2.7field-weighted citation impact, top 10% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.

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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 2 institutions in 2 countries.

Xiyan WangDepartment of Public Health, Shenyang Medical College, Liaoning, China.
Yan ChenDepartment of Public Health, Shenyang Medical College, Liaoning, China.
Bixuan YueDepartment of Public Health, Shenyang Medical College, Liaoning, China.
Sifan LiDepartment of Public Health, Shenyang Medical College, Liaoning, China.
Qitong LiuDepartment of Public Health, Shenyang Medical College, Liaoning, China.
Qiaoyu LiDepartment of Public Health, Shenyang Medical College, Liaoning, China.
Lin LiSchool of Medical Sciences, Örebro University, Örebro, Sweden.
Jiangwei SunInstitute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
Shenyang Medical College · CNKarolinska Institutet · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

As a symptomatic predementia stage with progressive cognitive decline, mild cognitive impairment (MCI) is common with aging. How changes in self-reported sleep duration affect MCI risk in the older adults remains unclear. Participants aged ≥ 65 years and enrolled at least two waves in the Chinese Longitudinal Healthy Longevity Survey were included in present longitudinal study. Changes in sleep duration were calculated as the difference between two waves and categorized into five groups: decreased >2 h, decreased 0-2h, stable, increased 0-2 h, and increased >2 h. MCI was measured by the Chinese version of the Mini-Mental State Examination. Generalized estimating equation model and restricted cubic spline function was applied to investigate the association. Among 9,005 participants (mean age, 81.19 years; 4,391 male), 2,877 developed MCI. Comparing with individuals with stable sleep duration, MCI risk [odds ratio (95% confidence intervals)] was: 1.15 (0.99-1.34) for decreased >2 h, 0.99 (0.87-1.13) for decreased 0-2h, 1.09 (0.95-1.24) for increased 0-2 h, and 1.57 (1.36-1.81) for increased >2 h, respectively. Similar patterns were observed among subgroup analyses by sex, age, and sleep quality at baseline. For participants with long sleep duration at baseline (>8h), further increased >2 h was associated with higher MCI risk [2.23 (1.55-3.21)]. Either in the whole or subgroup population, a U-shaped association was observed (

Indexed as

Self ReportAgedAged, 80 and overChinaCognitive DysfunctionFemaleHumansLongitudinal StudiesMaleRisk FactorsSleepchanges in sleep durationChinalongitudinal studymild cognitive impairment

Identifiers

PMID34091444
PMCPMC8221318
OpenAlexW3168885221

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.