Evidence map›Paper›PMID 38814372›Full record

Observational studyEndocrine2024

Utility of time in tight range (TITR) in evaluating metabolic control in pediatric and adult patients with type 1 diabetes in treatment with advanced hybrid closed-loop systems.

Pilar Bahillo-Curieses, Pablo Fernández Velasco, Paloma Pérez-López, Ana María Vidueira Martínez, María de la O Nieto de la Marca, Gonzalo Díaz-Soto

Abstract readObservational Study
In one paragraph

Observational study in Endocrine, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

11 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Real-World Glucometric Outcomes of the MiniMed 780G Advanced Hybrid Closed-Loop System in Users with Type 1 Diabetes in Spain.Diabetes therapy : research, treatment and education of diabetes and related disorders · 2026
    Article
  4. Article
  5. Observational
  6. Article
  7. Article
  8. Article
  9. Review
  10. 12-Month Time in Tight Range Improvement with Advanced Hybrid-Closed Loop System in Adults with Type 1 Diabetes.Diabetes therapy : research, treatment and education of diabetes and related disorders · 2024
    Article
  11. Article
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

6 authors.

Pilar Bahillo-CuriesesDepartment of Pediatrics, Pediatric Endocrinology, Hospital Clínico Universitario Valladolid, Ramón y Cajal Avenue, Number 3, 47005, Valladolid, Spain. mariapilar.bahillo@uva.es.
Pablo Fernández VelascoDepartment of Endocrinology and Nutrition, Hospital Clínico Universitario Valladolid, Ramón y Cajal Avenue, Number 3, 47005, Valladolid, Spain.
Paloma Pérez-LópezDepartment of Endocrinology and Nutrition, Hospital Clínico Universitario Valladolid, Ramón y Cajal Avenue, Number 3, 47005, Valladolid, Spain.
Ana María Vidueira MartínezDepartment of Pediatrics, Pediatric Endocrinology, Hospital Clínico Universitario Valladolid, Ramón y Cajal Avenue, Number 3, 47005, Valladolid, Spain.
María de la O Nieto de la MarcaDepartment of Endocrinology and Nutrition, Hospital Clínico Universitario Valladolid, Ramón y Cajal Avenue, Number 3, 47005, Valladolid, Spain.
Gonzalo Díaz-SotoDepartment of Endocrinology and Nutrition, Hospital Clínico Universitario Valladolid, Ramón y Cajal Avenue, Number 3, 47005, Valladolid, Spain.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo analyze the time in tight range (TITR), and its relationship with other glucometric parameters in patients with type 1 diabetes (T1D) treated with advanced hybrid closed-loop (AHCL) systems.

methodsA prospective observational study was conducted on pediatric and adult patients with T1D undergoing treatment with AHCL systems for at least 3 months. Clinical variables and glucometric parameters before and after AHCL initiation were collected.

resultsA total of 117 patients were evaluated. Comparison of metabolic control after AHCL initiation showed significant improvements in HbA1c (6.9 ± 0.9 vs. 6.6 ± 0.5%, p < 0.001), time in range (TIR) (68.2 ± 11.5 vs. 82.5 ± 6.9%, p < 0.001), TITR (43.7 ± 10.8 vs. 57.3 ± 9.7%, p < 0.001), glucose management indicator (GMI) (6.9 ± 0.4 vs. 6.6 ± 0.3%, p < 0.001), time below range (TBR) 70-54 mg/dl (4.3 ± 4.5 vs. 2.0 ± 1.4%, p < 0.001), and time above range (TAR) > 180 mg/dl (36.0 ± 7.6 vs. 15.1 ± 6.4%, p < 0.001). Coefficient of variation (CV) also improved (36.3 ± 5.7 vs. 30.6 ± 3.7, p < 0.001), while time between 140-180 mg/dl remained unchanged. In total, 76.3% achieved TITR > 50% (100% pediatric). Correlation analysis between TITR and TIR and GRI showed a strong positive correlation, modified by glycemic variability.

conclusionsAHCL systems achieve significant improvements in metabolic control (TIR > 70% in 93.9% patients). The increase in TIR was not related to an increase in TIR 140-180 mg/dl. Despite being closely related to TIR, TITR allows for a more adequate discrimination of the achieved control level, especially in a population with good initial metabolic control. The correlation between TIR and TITR is directly influenced by the degree of glycemic variability.

Indexed as

Blood GlucoseDiabetes Mellitus, Type 1Glycemic ControlHypoglycemic AgentsInsulinInsulin Infusion SystemsAdolescentAdultBlood Glucose Self-MonitoringChildFemaleGlycated HemoglobinHumansMaleMiddle AgedProspective StudiesBlood GlucoseGlycated HemoglobinHypoglycemic AgentsInsulinAdvanced hybrid closed loopGlucose variabilityTime in rangeTime in tight rangeType 1 diabetes

Identifiers

PMID38814372
PMCPMC11489309

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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.