Evidence map›Paper›PMID 31786197›Full record

ArticleJournal of the American Medical Directors Association2020

Weakness May Have a Causal Association With Early Mortality in Older Americans: A Matched Cohort Analysis.

Ryan McGrath, Brenda M Vincent, Mark D Peterson, Donald A Jurivich, Lindsey J Dahl, Kyle J Hackney, Brian C Clark

Open access · greenAbstract read
In one paragraph

Article in Journal of the American Medical Directors Association, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

15 citing papers in PubMed, 23 citations in OpenAlex.

  1. Review
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  5. Mental exertion causes impairments in multifinger force deficit during a handgrip strength task in older adults.The journals of gerontology. Series A, Biological sciences and medical sciences · 2025
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  11. The Associations of Handgrip Strength and Leg Extension Power Asymmetry on Incident Recurrent Falls and Fractures in Older Men.The journals of gerontology. Series A, Biological sciences and medical sciences · 2021
    Article
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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

7 authors at 5 institutions in 1 country.

Ryan McGrathDepartment of Health, Nutrition, and Exercise Sciences, North Dakota State University, Fargo, ND. Electronic address: ryan.mcgrath@ndsu.edu.
Brenda M VincentDepartment of Statistics, North Dakota State University, Fargo, ND.
Mark D PetersonDepartment of Physical Medicine and Rehabilitation, University of Michigan, Ann Arbor, MI.
Donald A JurivichDepartment of Geriatrics, University of North Dakota, Grand Forks, ND; Sanford Health, Fargo, ND.
Lindsey J DahlDepartment of Geriatrics, University of North Dakota, Grand Forks, ND; Sanford Health, Fargo, ND.
Kyle J HackneyDepartment of Health, Nutrition, and Exercise Sciences, North Dakota State University, Fargo, ND.
Brian C ClarkOhio Musculoskeletal and Neurological Institute, Ohio University, Athens, OH; Department of Biomedical Sciences, Ohio University, Athens, OH; Department of Geriatric Medicine, Ohio University, Athens, OH.
North Dakota State University · USOhio University · USSanford Health · USUniversity of Michigan–Ann Arbor · USUniversity of North Dakota · US

Funding

Neural mechanisms of dynapeniaR01AG044424 · NIA · OHIO UNIVERSITY ATHENS · PI CLARK, BRIAN C · 2014 to 2018
$1.4M
NIA NIH HHS R01 AG044424
6 · The paper itself

Abstract

objectivesQuantifying the association between muscle weakness and mortality with carefully matched cohorts will help to better establish the impact of weakness on premature death. We used a matched cohort analysis in a national sample of older Americans to determine if those who were weak had a higher risk for mortality compared with control groups with incrementally higher strength capacities.

designLongitudinal panel.

settingDetailed interviews that included physical measures were conducted in person, whereas core interviews were often performed over the telephone.

participantsData from 19,729 Americans aged at least 50 years from the 2006-2014 waves of the Health and Retirement Study were analyzed. MEASURES: A handgrip dynamometer was used to assess handgrip strength (HGS) in each participant. Men with HGS <26 kg were considered weak, ≥26 kg were considered not weak, and ≥32 kg were considered strong. Women with HGS <16 kg were classified as weak, ≥16 kg were classified as not-weak, and ≥20 kg were classified as strong. The National Death Index and postmortem interviews determined the date of death. The greedy matching algorithm was used to match cohorts.

resultsOf the 1077 weak and not-weak matched pairs, 401 weak (37.2%) and 296 not-weak (27.4%) older Americans died over an average 4.4 ± 2.5-year follow-up. There were 392 weak (37.0%) and 243 strong (22.9%) persons who died over a mean 4.5 ± 2.5-year follow-up from the 1057 weak and strong matched pairs. Those in the weak cohort had a 1.40 [95% confidence interval (CI) 1.19, 1.64] and 1.54 (CI 1.30, 1.83) higher hazard for mortality relative to persons in the not-weak and strong control cohorts, respectively. CONCLUSIONS AND IMPLICATIONS: Our findings may indicate a causal association between muscle weakness and mortality in older Americans. Health care providers should include measures of HGS as part of routine health assessments and discuss the health risks of muscle weakness with their patients.

Indexed as

Hand StrengthMuscle WeaknessAgedCohort StudiesFemaleHumansMaleAgingEpidemiologyGeriatricshand strengthmuscle strengthsarcopenia

Identifiers

PMID31786197
PMCPMC7186143
OpenAlexW2990535763

What OpenQuestion holds

Textmetadata
LicenceTDM
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.