Cited by 97Diabetes Management and ResearchDiabetes Management and EducationDiabetes and associated disorders

Incidence and risk factors for severe and symptomatic hypoglycemia in type 1 diabetes. Results of the HYPOS-1 study

HYPOS-1 Study Group of AMD, Giorda, Carlo B., Ozzello, Alessandro, Gentile, Sandro, Aglialoro, Alberto, Chiambretti, Anna, Baccetti, Fabio, Gentile, Francesco M. +3 more·2015·Acta Diabetologica

Abstract

Objective Hypoglycemia is common in type 1 diabetes mellitus (T1DM). We aimed to update the incidence of severe and symptomatic hypoglycemia and investigate several correlated factors.Methods In this multicenter, observational retrospective study, the data of 206 T1DM patients from a sample of 2,229 consecutive patients seen at 18 diabetes clinics were analyzed. Sociodemographic and clinical characteristics, severe hypoglycemia in the past 12 months, and symptomatic hypoglycemia in the past 4 weeks were recorded with a self-report questionnaire and a clinical form during a routine visit. Poisson multivariate models were applied.Results A minority of patients accounted for the majority of both severe and symptomatic episodes. The incidence rate (IR) of severe hypoglycemia was 0.49 (0.40-0.60) events/person-years. The incidence rate ratio (IRR) was higher in patients with previous severe hypoglycemia (3.71; 2.28-6.04), neuropathy (4.16; 2.14-8.05), long duration (>20 years, 2.96; 1.60-5.45), and on polypharmacy (1.24; 1.13-1.36), but it was lower when a complication was present. The IR of symptomatic hypoglycemia was 53.3 events/person-years, with an IRR significantly higher among women or patients with better education, or shorter duration or on pumps. The IRR was lower in patients with higher BMI or neuropathy or aged more than 50 years.Conclusions Fewer than 20 % of T1DM patients are free from hypoglycemia, with one in six having experienced at least one severe episode in the last year. The distribution is uneven, with a tendency of episodes to cluster in some patients. Severe and symptomatic episodes have different correlates and reflect different conditions.

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Authors
HYPOS-1 Study Group of AMD, Giorda, C. B., Ozzello, A., Gentile, S., Aglialoro, A., Chiambretti, A., Baccetti, F., Gentile, F. M., Lucisano, G., Nicolucci, A., & Rossi, M. C.
Affiliations
  • University of Campania "Luigi Vanvitelli" (IT)
  • Ospedale Policlinico San Martino (IT)
  • Mario Negri Sud Foundation (IT)
Corresponding author
Giorda, Carlo B.
Venue
Acta Diabetologica
Published
2015-02-12
Volume
52
Issue
5
Pages
845-853
ISSN
  • 0940-5429 (ISSN-L)
  • 1432-5233
OpenAlex
W1971061045
Cited by
97
References
25
Citations by year
2026: 3 · 2025: 6 · 2024: 7 · 2023: 5 · 2022: 13 · 2021: 9 · 2020: 8 · 2019: 10 · 2018: 14 · 2017: 11 · 2016: 10 · 2015: 1
FWCI
10.43
Type
journal article
Language
en
Open access
closed
Locations
  • Acta Diabetologica (publishedVersion)
  • PubMed (publishedVersion)
  • Archivio Istituzionale della Ricerca - Università degli Studi della Campania "Luigi Vanvitelli" (submittedVersion)
Funders
Novo Nordisk
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Education
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Diabetes and associated disorders
Keywords
type 1 diabetes, hypoglycemia, severe hypoglycemia, symptomatic hypoglycemia, hypoglycemia incidence, risk factors, diabetic neuropathy, disease duration, polypharmacy, insulin pump therapy, body mass index, sex differences
MeSH terms
Adolescent, Adult, Aged, Diabetes Mellitus, Type 1, Female, Glycated Hemoglobin, Humans, Hypoglycemia, Male, Middle Aged, Surveys and Questionnaires, Retrospective Studies, Risk Factors, Body Mass Index

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