Evidence map›Paper›PMID 25188375›Full record

ArticleDiabetes technology & therapeutics2014

Multicenter closed-loop/hybrid meal bolus insulin delivery with type 1 diabetes.

H Peter Chase, Francis J Doyle, Howard Zisser, Eric Renard, Revital Nimri, Claudio Cobelli, Bruce A Buckingham, David M Maahs, Stacey Anderson, Lalo Magni and 5 more

Erratum issuedOpen access · greenAbstract readEvaluation StudyMulticenter Study
In one paragraph

Article in Diabetes technology & therapeutics, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
5.1field-weighted citation impact, top 4% 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

17 citing papers in PubMed, 41 citations in OpenAlex.

  1. Trial
  2. Trial
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  5. Trial
  6. Early Stages of Automated Insulin Delivery.Journal of diabetes science and technology · 2025
    Review
  7. Early Stages of Automated Insulin Delivery.Diabetes technology & therapeutics · 2025
    Review
  8. Article
  9. Article
  10. Article
  11. Review
  12. Review
  13. Review
  14. Article
  15. Review
  16. Article
  17. GoCARB in the Context of an Artificial Pancreas.Journal of diabetes science and technology · 2015
    Article
4 · The record

Corrections and comments

  • Erratum issued
    Correction.2015 · Vistenin, Roberto [corrected to Visentin, Roberto]
5 · Who and what money

Authors and funding

15 authors at 11 institutions in 5 countries.

H Peter Chase1 Barbara Davis Center for Childhood , Aurora, Colorado.
Francis J Doyle
Howard Zisser
Eric Renard
Revital Nimri
Claudio Cobelli
Bruce A Buckingham
David M Maahs
Stacey Anderson
Lalo Magni
John Lum
Peter Calhoun
Craig Kollman
Roy W Beck
Control to Range Study Group
Université de Montpellier · FRUniversity of Colorado Health · USCentre National de la Recherche Scientifique · FRJaeb Center for Health Research · USSansum Diabetes Research Institute · USStanford University · USTel Aviv University · ILUniversity of California, Santa Barbara · USUniversity of Padua · ITUniversity of Pavia · ITUniversity of Virginia · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThis study evaluated meal bolus insulin delivery strategies and associated postprandial glucose control while using an artificial pancreas (AP) system. SUBJECTS AND

methodsThis study was a multicenter trial in 53 patients, 12-65 years of age, with type 1 diabetes for at least 1 year and use of continuous subcutaneous insulin infusion for at least 6 months. Four different insulin bolus strategies were assessed: standard bolus delivered with meal (n=51), standard bolus delivered 15 min prior to meal (n=40), over-bolus of 30% delivered with meal (n=40), and bolus purposely omitted (n=46). Meal carbohydrate (CHO) intake was 1 g of CHO/kg of body weight up to a maximum of 100 g for the first three strategies or up to a maximum of 50 g for strategy 4.

resultsOnly three of 177 meals (two with over-bolus and one with standard bolus 15 min prior to meal) had postprandial blood glucose values of <60 mg/dL. Postprandial hyperglycemia (blood glucose level >180 mg/dL) was prolonged for all four bolus strategies but was shorter for the over-bolus (41% of the 4-h period) than the two standard bolus strategies (73% for each). Mean postprandial blood glucose level was 15.9 mg/dL higher for the standard bolus with meal compared with the prebolus (baseline-adjusted, P=0.07 for treatment effect over the 4-h period).

conclusionsThe AP handled the four bolus situations safely, but at the expense of having elevated postprandial glucose levels in most subjects. This was most likely secondary to suboptimal performance of the algorithm.

Indexed as

Insulin Infusion SystemsMealsPancreas, ArtificialAdolescentAdultAlgorithmsBlood GlucoseBlood Glucose Self-MonitoringChildDiabetes Mellitus, Type 1Dietary CarbohydratesFemaleHumansHyperglycemiaHypoglycemic AgentsMaleBlood GlucoseDietary CarbohydratesHypoglycemic Agents

Identifiers

PMID25188375
PMCPMC4183919
OpenAlexW2129938735

What OpenQuestion holds

Textmetadata
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.