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Frailty, fitness and late-life mortality in relation to chronological and biological age

Overview of attention for article published in BMC Geriatrics, February 2002
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About this Attention Score

  • In the top 25% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (85th percentile)
  • High Attention Score compared to outputs of the same age and source (82nd percentile)

Mentioned by

news
1 news outlet
twitter
1 tweeter

Citations

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478 Dimensions

Readers on

mendeley
296 Mendeley
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Title
Frailty, fitness and late-life mortality in relation to chronological and biological age
Published in
BMC Geriatrics, February 2002
DOI 10.1186/1471-2318-2-1
Pubmed ID
Authors

Arnold B Mitnitski, Janice E Graham, Alexander J Mogilner, Kenneth Rockwood

Abstract

People age at remarkably different rates, but how to estimate trajectories of senescence is controversial. In a secondary analysis of a representative cohort of Canadians aged 65 and over (n = 2914) we estimated a frailty index based on the proportion of 20 deficits observed in a structured clinical examination. The construct validity of the index was examined through its relationship to chronological age (CA). The criterion validity was examined in its ability to predict mortality, and in relation to other predictions about aging. From the frailty index, relative (to CA) fitness and frailty were estimated, as was an individual's biological age. The average value of the frailty index increased with age in a log-linear relationship (r = 0.91; p < 0.001). In a Cox regression analysis, biological age was significantly more highly associated with death than chronological age. The average increase in the frailty index (i.e. the average accumulation of deficits) amongst those with no cognitive impairment was 3 per cent per year. The frailty index is a sensitive predictor of survival. As the index includes items not traditionally related to adverse health outcomes, the finding is compatible with a view of frailty as the failure to integrate the complex responses required to maintain function.

Twitter Demographics

The data shown below were collected from the profile of 1 tweeter who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 296 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United Kingdom 4 1%
United States 2 <1%
Mexico 2 <1%
Australia 1 <1%
Canada 1 <1%
Slovenia 1 <1%
Russia 1 <1%
Denmark 1 <1%
Unknown 283 96%

Demographic breakdown

Readers by professional status Count As %
Researcher 53 18%
Student > Ph. D. Student 49 17%
Student > Master 40 14%
Student > Bachelor 29 10%
Student > Doctoral Student 23 8%
Other 60 20%
Unknown 42 14%
Readers by discipline Count As %
Medicine and Dentistry 116 39%
Nursing and Health Professions 24 8%
Social Sciences 20 7%
Psychology 12 4%
Biochemistry, Genetics and Molecular Biology 11 4%
Other 60 20%
Unknown 53 18%

Attention Score in Context

This research output has an Altmetric Attention Score of 13. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 03 July 2021.
All research outputs
#2,014,801
of 19,856,719 outputs
Outputs from BMC Geriatrics
#469
of 2,440 outputs
Outputs of similar age
#43,688
of 311,865 outputs
Outputs of similar age from BMC Geriatrics
#30
of 173 outputs
Altmetric has tracked 19,856,719 research outputs across all sources so far. Compared to these this one has done well and is in the 89th percentile: it's in the top 25% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 2,440 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 10.1. This one has done well, scoring higher than 80% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 311,865 tracked outputs that were published within six weeks on either side of this one in any source. This one has done well, scoring higher than 85% of its contemporaries.
We're also able to compare this research output to 173 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 82% of its contemporaries.