Evidence map›Paper›PMID 28263665›Full record

ArticleDiabetes technology & therapeutics2017

A Clinical Trial of the Accuracy and Treatment Experience of the Flash Glucose Monitor FreeStyle Libre in Adults with Type 1 Diabetes.

Arndís F Ólafsdóttir, Stig Attvall, Ulrika Sandgren, Sofia Dahlqvist, Aldina Pivodic, Stanko Skrtic, Elvar Theodorsson, Marcus Lind

Open access · hybridAbstract readEvaluation Study
In one paragraph

Article in Diabetes technology & therapeutics, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 82 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
82citing papers in PubMed, 2 pooled it
17.9field-weighted citation impact, top 1% 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

82 citing papers in PubMed, 2 syntheses or guidelines pooled it, 172 citations in OpenAlex.

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22 more citing papers are in PubMed but not listed here.

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

8 authors at 3 institutions in 1 country.

Arndís F Ólafsdóttir1 Department of Medicine, NU Hospital Group , Uddevalla, Sweden .
Stig Attvall2 Department of Medicine, Sahlgrenska University Hospital , Gothenburg, Sweden .
Ulrika Sandgren2 Department of Medicine, Sahlgrenska University Hospital , Gothenburg, Sweden .
Sofia Dahlqvist1 Department of Medicine, NU Hospital Group , Uddevalla, Sweden .
Aldina Pivodic4 Statistiska Konsultgruppen , Gothenburg, Sweden .
Stanko Skrtic3 Department of Molecular and Clinical Medicine, University of Gothenburg , Gothenburg, Sweden .
Elvar Theodorsson6 Departments of Laboratory Medicine and Clinical and Experimental Medicine, Linköping University , Linköping, Sweden .
Marcus Lind1 Department of Medicine, NU Hospital Group , Uddevalla, Sweden .
University of Gothenburg · SENU Hospital Group · SESahlgrenska University Hospital · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn Sweden, FreeStyle Libre a flash glucose monitoring system came onto the market in 2014 as a complement to self-monitoring of blood glucose. The aim of this study was to evaluate the accuracy and treatment experience of the FreeStyle Libre system.

methodsFifty-eight adults with type 1 diabetes used FreeStyle Libre for 10-14 days and measured capillary blood glucose levels with the HemoCue blood glucose measurement system at least six times a day simultaneously.

resultsFor the entire study period, the mean absolute relative difference (MARD) was 13.2% (95% confidence interval [CI] 12.0%-14.4%). MARD was 13.6% (95% CI 12.1%-15.4%) during week 1 and 12.7% (95% CI 11.5%-13.9%) during week 2. The mean absolute difference (MAD) for the whole study period was 19.8 mg/dL (1.1 mmol/L) (95% CI 17.8-21.8 mg/dL), including 20.5 mg/dL (1.14 mmol/L) during week 1 and 19.0 mg/dL (1.05 mmol/L) during week 2. The overall correlation coefficient was 0.96. For glucose values <72, 72-180, and >180 mg/dL (<4, 4-10, and >10 mmol/L), the MARD was 20.3% (95% CI 17.7%-23.1%), 14.7% (95% CI 13.4%-16%), and 9.6% (95% CI 8.5%-10.8%), respectively, and respective MAD values were 12.3, 17.8, and 23.6 mg/dL (0.69, 0.99, and 1.31 mmol/L). Using the 10-item visual analog scale, patients rated their experience with FreeStyle Libre as generally positive, with mean values ranging from 8.22 to 9.8.

conclusionsFreeStyle Libre had a similar overall MARD as continuous blood glucose monitoring systems in earlier studies when studied in similar at-home conditions. The overall patient satisfaction was high.

Indexed as

Patient SatisfactionAdolescentAdultAgedBlood GlucoseBlood Glucose Self-MonitoringDiabetes Mellitus, Type 1FemaleHumansMaleMiddle AgedYoung AdultBlood GlucoseAccuracyDiabetes mellitusFlash glucose monitor

Identifiers

PMID28263665
PMCPMC5359691
OpenAlexW2597477321

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.