Evidence map›Paper›PMID 31942508›Full record

ArticleAging medicine (Milton (N.S.W))2019

Associations between a laboratory frailty index and adverse health outcomes across age and sex.

Joanna M Blodgett, Olga Theou, Arnold Mitnitski, Susan E Howlett, Kenneth Rockwood

Open access · diamondAbstract read
In one paragraph

Article in Aging medicine (Milton (N.S.W)), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 12% 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

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 39 citations in OpenAlex.

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  4. Heart Stress, Frailty and Mortality Risk in two prospective cohorts.medRxiv : the preprint server for health sciences · 2026
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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

5 authors at 2 institutions in 2 countries.

Joanna M BlodgettMRC Unit for Lifelong Health and Ageing at UCL London UK.ORCID 0000-0001-7684-3571
Olga TheouGeriatric Medicine Department of Medicine Dalhousie University Halifax Nova Scotia Canada.ORCID https://orcid.org/0000-0001-6460-782X
Arnold MitnitskiGeriatric Medicine Department of Medicine Dalhousie University Halifax Nova Scotia Canada.ORCID 0000-0003-4596-2847
Susan E HowlettGeriatric Medicine Department of Medicine Dalhousie University Halifax Nova Scotia Canada.ORCID 0000-0001-5351-6308
Kenneth RockwoodGeriatric Medicine Department of Medicine Dalhousie University Halifax Nova Scotia Canada.ORCID 0000-0002-6674-995X
Dalhousie University · CAMRC Unit for Lifelong Health and Ageing · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveEarly frailty may be captured by a frailty index (FI) based entirely on vital signs and laboratory tests. Our aim was to examine associations between a laboratory-based FI (FI-Lab) and adverse health outcomes, and investigate how this changed with age.

methodsUp to 8988 individuals aged 20+ years from the 2003-2004 and 2005-2006 National Health and Nutrition Examination Survey cohorts were included. Characteristics of the FI-Lab were compared to those of a self-reported clinical FI. Associations between each FI and health care use, self-reported health, and disability were examined in the full sample and across age groups.

resultsLaboratory-based FI scores increased with age but did not demonstrate expected sex differences. Women aged 20-39 years had higher FI scores than men; this pattern reversed after age 60 years. FI-Lab scores were associated with poor self-reported health (odds ratio[95% confidence interval]: 1.46[1.39-1.54]), high health care use (1.35[1.29-1.42]), and high disability (1.41[1.32-1.50]), even among those aged 20-39 years.

conclusionHigher FI-Lab scores were associated with poor health outcomes at all ages. Associations in the youngest group support the notion that deficit accumulation occurs across the lifespan. FI-Lab scores could be utilized as an early screening tool to identify deficit accumulation at the cellular and molecular level before they become clinically visible.

Indexed as

agingepidemiologyfrailtypre‐clinical

Identifiers

PMID31942508
PMCPMC6880698
OpenAlexW2921550045

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.