Evidence map›Paper›PMID 26634246›Full record

ArticleBMC geriatrics2015

Frailty still matters to health and survival in centenarians: the case of China.

Danan Gu, Qiushi Feng

Open access · goldAbstract read
In one paragraph

Article in BMC geriatrics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
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

35 citing papers in PubMed, 76 citations in OpenAlex.

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  12. Machine learning prediction of survival in centenarians after age 100: a retrospective, population-based cohort study.The journals of gerontology. Series A, Biological sciences and medical sciences · 2025
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  20. Associations between Frailty and Ambient Temperature in Winter: Findings from a Population-Based Study.International journal of environmental research and public health · 2022
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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

2 authors at 2 institutions in 2 countries.

Danan GuUnited Nations Population Division, Two UN Plaza, DC2-1910, New York, NY, 10017, USA. gudanan@yahoo.com.
Qiushi FengDepartment of Sociology, National University of Singapore, Singapore, Singapore.
National University of Singapore · SGUnited Nations Population Fund · US

Funding

Demographic Analysis on Determinants of Healthy Longevity in ChinaR01AG023627 · NIA · DUKE UNIVERSITY · PI ZENG, YI · 2004 to 2014
$3.9M
NIA NIH HHS R01 AG023627NIA NIH HHS R01AG023627
6 · The paper itself

Abstract

backgroundFrailty indicates accumulated vulnerability of adverse health outcomes in later life. Its robustness in predicting dependent living, falls, comorbidity, disability, health change, mortality, and health care utilization at older ages is well-documented. However, almost no studies have ever attempted to examine its robustness in centenarians, mainly due to data unavailability. This study examines prevalence of frailty in centenarians and its predictive powers on subsequent mortality and health conditions.

methodsWe use a sample of 4434 centenarians from the 2002, 2005, 2008, and 2011 waves of the Chinese Longitudinal Healthy Longevity Survey (CLHLS), with elders in three younger age groups 65-79, 80-89, and 90-99 as comparisons. Frailty is measured by a cumulative deficit index (DI) that is constructed from 39 variables covering physical and cognitive function, disease conditions, psychological well-being, and other health dimensions. Survival analysis is conducted to examine how frailty is associated with subsequent mortality at an average follow-up length of 3.7 years (2.6 years for deceased persons died in 2002-2011 and 7.6 years for survived persons at the 2011 wave). Logistic regressions are applied to examine how frailty is associated with subsequent physical and cognitive functions, disease conditions, and self-rated health with an average follow-up length of 3.0 years.

resultsThe study reveals that centenarians are frailer than younger elders. The DI scores increase from less than 0.1 at ages 65-79 to over 0.30 in centenarians. Women are frailer than men at all ages. However, there is a great variation in frailty among all age groups. We also find that each additional increase of 0.01 score of the DI is associated with 1.6 % higher mortality risk (95 % CI: 1.014-1.018) in female centenarians and 1.4 % higher mortality risk (95 % CI: 1.010-1.018) in male centenarians, although these associations are weaker than those in other three younger age groups.

conclusionsFrailty still plays an important role in determining subsequent health outcomes and mortality in centenarians.

Indexed as

Accidental FallsAgedAged, 80 and overAgingChinaComorbidityFemaleFrail ElderlyGeriatric AssessmentHealth Status DisparitiesHumansLogistic ModelsLongitudinal StudiesMaleMiddle AgedPersons with Disabilities

Identifiers

PMID26634246
PMCPMC4669603
OpenAlexW2183853736

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.