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CompletedNCT05481801AVADI-2Updated Feb 8, 2023

Adherence to Guidelines VAccination in Type 1 DIabetes Mellitus Patients (AVADI-2)

An observational study in Type 1 Diabetes, sponsored by Castilla-La Mancha Health Service. Completed at 1 site in Spain. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-02-08.

Sponsored by Castilla-La Mancha Health Service · Observational

Study type
Observational
Model
Cohort
Time perspective
Retrospective
Enrollment
300
Ages
18 Years and older
Sex
All
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Study summary

Observational study about adherence to guidelines for Covid-19, Influenza, Pneumococcal and Hepatitis B Vaccination in adult patients with type 1 Diabetes mellitus.

Read the detailed description

Cross-sectional analysis about adherence to guidelines for Covid-19, Influenza, Pneumococcal and Hepatitis B Vaccination in adult patients with type 1 Diabetes mellitus.

All clinical variables are gathered from two EMR softwares (Mambrino XXI and Turriano).

Data analysis is conducted using SPSS (Chicago, IL) statistics software. Results are presented as mean ± SD values or percentages. A paired Student's t-test or a Wilcoxon signed-rank test were used for the analysis of differences. Comparisons between proportions were analyzed using a chi-squared test. A P value \< 0.05 was considered statistically significant.

The protocol was approved by the reference Castilla-La Mancha Public Health Institute Ethic Committee. All participants provided written informed consent.

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Conditions studied

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In context

Diabetes Mellitus

10,925 studies on the registry are indexed under Diabetes Mellitus; 1,319 are open to participants now.

This study's enrollment of 300 is above the median of 233 across 2,220 observational studies indexed under Diabetes Mellitus.

Browse Diabetes Mellitus studies →

Lead sponsor

Castilla-La Mancha Health Service is the lead sponsor of 19 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Sampling method
Non-probability sample

Study population

All type 1 diabetes patients attendet at the Ciudad Real General University Hospital.

Inclusion criteria

  • Type 1 diabetes
  • Age: 18 yrs. or older

Exclusion criteria

Exclusion Criteria:

  • Other diabetes types.
  • Younger than 18 years.
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Study design

Observational model
Cohort
Time perspective
Retrospective
Enrollment
300 participants (actual)
Patient registry
No

Groups and cohorts

  • Vaccination adherence

    All type 1 diabetes adults patients attended in Ciudad Real General University Hospital willl be checked for Covid-19, Influenza Vaccination status, Pneumococcal Vaccination status and Hepatitis B Virus (HBV) status.

    Biological: Covid-19 vaccination · Biological: Influenza vaccination · Biological: Pneumococal vaccination · Biological: Hepatitis B Virus (HBV) vaccination

Interventions

  • BiologicalCovid-19 vaccination

    Correct Covid19 vaccination status was considered in the following situation: Received at least two Covid-19 vaccine doses being the last in the last 6 months.

  • BiologicalInfluenza vaccination

    Correct influenza vaccination status was considered in the following situation: - Received at least one Influenza vaccine dose in the last year.

  • BiologicalPneumococal vaccination

    Correct pneumococal vaccination status was considered if a subject received at least one of the following options: One pneumococcal conjugate vaccine (PCV) 13 dose in the last year. One PCV13 dose following a pneumococcal polysaccharide vaccine (PPSV) 23 dose between the following 8 weeks and 12 months. One PPSV 23 dose in the last 5 years. One PPSV23 dose in the last 5 years and a second PPSV23 dose at 5 years or PCV13 at 1 year.

  • BiologicalHepatitis B Virus (HBV) vaccination

    Correct Hepatitis B Virus (HBV) vaccination status was considered in the following situation: .- Received at least three consecutive doses of HBV vaccine during six consecutive months.

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What researchers measure

Primary outcomes

  1. Vaccination adherence

    Adherence ratio (number of vaccinated patients/total number of patients) to regional guidelines for the Immunization for Covid-19, pneumococcus, influenza and HBV of Adults With Type 1 Diabetes Mellitus

    Time frame: 1 year and a half

Secondary outcomes

  1. Sick Leaves

    Total number of related sick leaves due to Covid-19, pneumococcus, influenzae or HBV according to vaccination status (vaccinated or not vaccinated).

    Time frame: 1 year and a half

  2. Hospital admission

    Number of hospital admission according to vaccination status (vaccinated or not vaccinated) for Covid-19, pneumococcus, influenza and HBV.

    Time frame: 1 year and a half

  3. Death

    Mortality rate according to vaccination status

    Time frame: 1 year and a half

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Study locations

1 site
  • Ciudad Real General University Hospital
    Ciudad Real, 13005, Spain
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References and documents

Publications

  • Moreno-Fernandez J, Garcia-Seco JA, Rodrigo EMO, Segura AMS, Garcia-Seco F, Munoz-Rodriguez JR. Vaccination adherence to influenza, pneumococcal and hepatitis B virus in adult type 1 diabetes mellitus patients. Prim Care Diabetes. 2020 Aug;14(4):343-348. doi: 10.1016/j.pcd.2019.09.004. Epub 2019 Sep 30. PubMed 31582202 ↗
  • Giatraki V, Dimitriou H, Pappas A, Mamoulakis D, Makris G, Galanakis E, Perdikogianni C. Vaccine coverage in children, adolescents and adults with type 1 diabetes and their close contacts in Crete. Hum Vaccin Immunother. 2021 Nov 2;17(11):4291-4298. doi: 10.1080/21645515.2021.1973882. Epub 2021 Oct 6. PubMed 34613871 ↗
  • Wang CH, Jones J, Hilliard ME, Tully C, Monaghan M, Marks BE, Hildebrandt T, Streisand R. Correlates and Patterns of COVID-19 Vaccination Intentions among Parents of Children with Type 1 Diabetes. J Pediatr Psychol. 2022 Aug 12;47(8):883-891. doi: 10.1093/jpepsy/jsac048. PubMed 35689648 ↗

Individual participant data

Plan to share: No — Clinical IPD will be available at request from others researchers.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 8, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT05481801
Lead sponsor
Castilla-La Mancha Health Service
Responsible party
Sponsor
First posted
Aug 1, 2022
Start date
Sep 1, 2022
Primary completion
Dec 1, 2022
Completion
Dec 31, 2022
Last update
Feb 8, 2023

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Feb 2023. You cannot join it, but the record below documents what was studied.

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