Evidence map›Paper›PMID 34134643›Full record

ArticleBMC geriatrics2021

Sleep duration and incident frailty: The Rural Frailty Study.

Karla Moreno-Tamayo, Betty Manrique-Espinoza, Evangelina Morales-Carmona, Aarón Salinas-Rodríguez

Abstract read
In one paragraph

Article in BMC geriatrics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing 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

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

  1. Pooled it
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  13. Is meeting 24-hour movement guidelines associated with a lower risk of frailty among adults?The international journal of behavioral nutrition and physical activity · 2025
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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

4 authors.

Karla Moreno-TamayoUnidad de Investigación Epidemiológica y en Servicios de Salud, Área Envejecimiento, Instituto Mexicano del Seguro Social, Cuidad de México, Mexico.
Betty Manrique-EspinozaCenter for Evaluation Research and Surveys, National Institute of Public Health, Cuernavaca, Morelos, Mexico. bmanrique@insp.mx.
Evangelina Morales-CarmonaCenter for Evaluation Research and Surveys, National Institute of Public Health, Cuernavaca, Morelos, Mexico.
Aarón Salinas-RodríguezCenter for Evaluation Research and Surveys, National Institute of Public Health, Cuernavaca, Morelos, Mexico.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe association between sleep duration and frailty remains unconclusive since most of the studies have been cross-sectional. Therefore, this study aimed to analyze the association between sleep duration, sleep complaints, and incident frailty.

methodsA community-based cohort study from rural areas in Mexico with 309 older adults aged 70 and over. Data from waves two and three of the Rural Frailty Study were used. We operationalized the Fried frailty phenotype to describe prevalent and incident frailty at two consecutive waves. Sleep duration was classified as: ≤ 5 h, 6 h, 7-8 h, and ≥ 9 h; and the self-reported sleep complaints as a dichotomous variable. Analyses were performed using Poison regression models.

resultsThe average age was 76.2 years and 55.3% were women; the incidence of frailty was 30.4%; 13.3% slept ≤5 h, and 38.5% ≥ 9 h. Compared with the group that slept 7-8 h, the risk of frailty at 4.4 years of follow-up was significantly higher among those who slept ≤5 h (adjusted RR 1.80, 95% CI: 1.04-3.11) and among those who slept ≥9 h (adjusted RR 1.69, 95% CI: 1.10-2.58). Sleep complaints were not associated with incident frailty (adjusted RR 1.41, 95% CI: 0.94-2.12).

conclusionsOur results show that short and long sleep duration are associated with the incidence of frailty. Studies that objectively evaluate sleep duration are needed to clarify whether meeting the recommended hours of sleep decreases frailty incidence.

Indexed as

FrailtyAgedAged, 80 and overCohort StudiesCross-Sectional StudiesFemaleFrail ElderlyHumansMexicoSleepIncident frailtySleep complaintsSleep duration

Identifiers

PMID34134643
PMCPMC8207661

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LicenceCC BY
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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.