Evidence map›Paper›PMID 33431600›Full record

ArticleBMJ open diabetes research & care2021

Association between hemoglobin A1c variability and hypoglycemia-related hospitalizations in veterans with diabetes mellitus.

Molly J Y Zhao, Julia C Prentice, David C Mohr, Paul R Conlin

Open access · goldAbstract read
In one paragraph

Article in BMJ open diabetes research & care, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.8field-weighted citation impact, top 15% 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

7 citing papers in PubMed, 13 citations in OpenAlex.

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  7. Increased Hemoglobin ADiabetes care · 2021
    Observational
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 at 2 institutions in 1 country.

Molly J Y ZhaoCenter for Healthcare Organization and Implementation Research (CHOIR), VA Boston Health Care System, Boston, Massachusetts, USA mollyjz@bu.edu.ORCID 0000-0002-2457-3108
Julia C PrenticeCenter for Healthcare Organization and Implementation Research (CHOIR), VA Boston Health Care System, Boston, Massachusetts, USA.
David C MohrCenter for Healthcare Organization and Implementation Research (CHOIR), VA Boston Health Care System, Boston, Massachusetts, USA.
Paul R ConlinMedical Service (111), VA Boston Healthcare System, West Roxbury, Massachusetts, USA.
Boston University · USHarvard University · US

Funding

Hemoglobin A1C Variability as a Risk Factor for Diabetes ComplicationsR01DK114098 · NIDDK · HARVARD MEDICAL SCHOOL · PI CONLIN, PAUL R · 2019 to 2022
$2.3M
Hemoglobin A1c Variability and Adverse Health OutcomesI01HX001870 · VA · VA BOSTON HEALTH CARE SYSTEM · PI CONLIN, PAUL R · 2018 to 2019
–
HSRD VA I01 HX001870NIDDK NIH HHS R01 DK114098
6 · The paper itself

Abstract

introductionTo study the impact of hemoglobin A1c (A1c) variability on the risk of hypoglycemia-related hospitalization (HRH) in veterans with diabetes mellitus. RESEARCH DESIGN AND

methods342 059 veterans with diabetes aged 65 years or older were identified for a retrospective cohort study. All participants had a 3-year baseline period from January 1, 2005 to December 31, 2016, during which they had at least four A1c tests. A1c variability measures included coefficient of variation (A1c CV), A1c SD, and adjusted A1c SD. HRH was identified during a 2-year follow-up period from Medicare and the Veterans Health Administration through validated algorithms of International Classification of Diseases (ICD)-9 and ICD-10 codes. Logistic regression modeling was used to evaluate the relationship between A1c variability and HRH risk while controlling for relevant clinical covariates.

results2871 patients had one or more HRH in the 2-year follow-up period. HRH risk increased with greater A1c variability, and this was consistent across A1c CV, A1c SD, and adjusted A1c SD. Average A1c levels were also independently associated with HRH, with levels <7.0% (53 mmol/mol) having lower risk and >9% (75 mmol/mol) with greater risk. The relationships between A1c variability remained significant after controlling for average A1c levels and prior HRH during the baseline period.

conclusionIncreasing A1c variability and elevated A1c levels are associated with a greater risk of HRH in older adults with diabetes. Clinicians should consider A1c variability when assessing patients for risk of severe hypoglycemia.

Indexed as

Diabetes MellitusHypoglycemiaVeteransAgedGlycated HemoglobinHospitalizationHumansMedicareRetrospective StudiesUnited StatesGlycated Hemoglobindiabetes complicationshypoglycemia

Identifiers

PMID33431600
PMCPMC7802724
OpenAlexW3118928334

What OpenQuestion holds

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LicenceCC BY-NC
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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.