ClinicalTrials.gg
CompletedNCT03438162Updated Nov 9, 2018

Impact of Pharmacotherapeutic Education on Medication Adherence and Adverse Outcomes in Type 2 Diabetes

An interventional study of Education in Diabetes Mellitus, Type 2, Education and Drug-Related Side Effects and Adverse Reactions, sponsored by University Hospital Dubrava. Completed at 1 site in Croatia. Open to participants aged 18 Years to 90 Years. Per ClinicalTrials.gov, last updated 2018-11-09.

Sponsored by University Hospital Dubrava · Not applicable, Interventional, and Supportive care

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Phase
Not applicable
Study type
Interventional
Enrollment
130
Allocation
Randomized
Ages
18 Years to 90 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-15

Among 82 studies in Diabetes Mellitus, Type 2 with a site in Croatia — 6 open to participants now, 8 under way, 5 of them phase 3. Diabetes Mellitus, Type 2 · Croatia.

Enrollment
65th of 77
130 · median 660
Started
2018
with 3 others
No phase
5 of 82
1 open now
Registered
60th of 82
by date
Lead sponsor
2 of 82
University Hospital Dubrava

Among the 82 studies in Diabetes Mellitus, Type 2 with a site in Croatia, this one is the 65th largest by enrollment of the 77 interventional ones that give a count, is one of 4 that started in 2018, is one of 5 with no phase, and was the 60th registered.

Diabetes Mellitus, Type 2

10,382 studies on the registry are indexed under Diabetes Mellitus, Type 2; 1,411 are open to participants now.

Browse Diabetes Mellitus, Type 2 studies →

Open to participants now

6 of the 82 studies in Diabetes Mellitus, Type 2 with a site in Croatia are open now. Recruiting first, the newest first:

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All 6 open studies →

A study can be open while its sites in Croatia have not opened yet or have stopped. Only those recruiting at a site in Croatia →

Who these studies take

Of the 883 Diabetes Mellitus, Type 2 studies recruiting now, 374 (42%) set no upper age limit and 383 (43%) stop at 75 or younger; 52 take children under 18; 205 take healthy volunteers.

This study: 18 Years to 90 Years · all sexes · no healthy volunteers.

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02

Study summary

Type 2 diabetes mellitus (T2DM) is a chronic progressive disease that affects more than 400 million people worldwide. There are a few studies evaluating ADRs in diabetics. Many patients experience ADRs soon after hospital discharge which can be attributed to the changes in the pharmacotherapy during hospitalization. Education and counseling of diabetic patients has been shown to improve medication adherence and clinical outcomes. Studies that included medical patients revealed that education can significantly reduce risk of ADRs after hospital discharge. Pharmacotherapeutic education is a part of comprehensive education of diabetics that is focused on a proper use of medications, prevention and early detection of ADRs.

Read the detailed description

Type 2 diabetes mellitus (T2DM) is a chronic progressive disease that affects more than 400 million people worldwide. Besides adapting their lifestyle, a large majority of diabetic patients needs pharmacotherapy to achieve adequate glycaemic control. Additional pharmacotherapy is usually needed for the treatment of concomitant diseases and risk factors. This can result in polytherapy which puts patients et risk of adverse drug reactions (ADRs). There are a few studies evaluating ADRs in diabetics. A prospective observation study reported ADRs in 11.8% of diabetic patients in tertiary care hospital. Many patients experience ADRs soon after hospital discharge which can be attributed to the changes in the pharmacotherapy during hospitalization. These ADRs can result in early readmission and emergency department (ED) visits. In an Italian study, ADRs were reported in 73.8% of patients taking oral antidiabetics drugs within one month of study enrollment. It is estimated that between 11-38% of ambulatory ADRs are preventable. Medication adherence plays an important role in the treatment of T2DM because it clearly improves glycaemic control and clinical outcomes and lowers medical costs. Adherence rates to DM medications vary from 31% to 87% in retrospective studies and 53% to 98% in prospective studies. It is affected by many factors such as age, race, health beliefs, medication cost, co-pays, etc. Adherence is lower in the case of ADRs, when medications are taken more than twice daily, with concomitant depression and skepticism about the importance of medication. In recent years, 30-day readmission rate has been emphasised as a measure of healthcare quality. Diabetic patients have higher readmission rate compared to patients without DM. In the study by Ostling and al., 30-day readmission rate for patients with DM was 26%. Many readmissions are drug-related and can be caused by ADRs and non-adherence. These readmissions are potentially preventable. It is estimated that between 40%-57.1% of readmissions caused by ADRs and all readmissions caused by non-adherence are preventable. Education and counseling of diabetic patients has been shown to improve medication adherence and clinical outcomes. Studies that included medical patients revealed that education can significantly reduce risk of ADRs after hospital discharge. Pharmacotherapeutic education is a part of comprehensive education of diabetics that is focused on a proper use of medications, prevention and early detection of ADRs. The aim of this study was to evaluate the impact of pharmacotherapeutic education on 30-day post discharge medication adherence and adverse outcomes (ADRs, readmissions, ED visits and death) in diabetic patients.

03

Conditions studied

  • Diabetes Mellitus, Type 2
  • Education
  • Drug-Related Side Effects and Adverse Reactions
04

Who can participate

Ages eligible
18 Years to 90 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • age 18 years or older,
  • diagnosis of T2DM and
  • hospital discharge to the community.

Exclusion criteria

Exclusion Criteria:

  • cognitive disorders that would interfere with patient's participation,
  • diagnosis of a terminal illness with a \<1 month,
  • discharge to a long-term care facility or
  • inability to be followed-up.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

05

Study design

Phase
Not applicable
Primary purpose
Supportive care
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
130 participants (actual)

Study arms

  • No intervention
    Control group

    Patients in both groups received diabetes education during the hospital stay. Standardized diabetes education includes education regarding the disease, diet, physical activity, alcohol intake, smoking, education regarding diabetes medication, self monitoring of glucose, and education regarding acute and chronic complications.

  • Experimental
    Intervention group

    Patients in both groups received diabetes education during the hospital stay. Standardized diabetes education includes education regarding the disease, diet, physical activity, alcohol intake, smoking, education regarding diabetes medication, self monitoring of glucose, and education regarding acute and chronic complications. Patients randomized in the intervention group received pre-discharge pharmacotherapeutic education. The education was conducted by a qualified physician.

    Behavioral: Education

Interventions

  • BehavioralEducation

    Patients randomized in the intervention group received pre-discharge pharmacotherapeutic education. The education was conducted by a qualified physician.

06

What researchers measure

Primary outcomes

  1. Medication adherence assessment method

    The medication adherence of the two diabetic patients groups (intervention group and group without intervention) 30 days after the recruitment in the study was assessed by the pill count method. Where adherence was in the range from 80% to 100% the patients were categorized as adherent, and where adherence was less than 80% or more than 100% the patients were categorized as non-adherent.

    Time frame: one month

Secondary outcomes

  1. Adverse events questionnaire

    The number of participants with treatment-related adverse events in the two diabetic patients groups (intervention group and group without intervention) 30 days after the recruitment in the study was compared using the questionnaire method which was conducted by the physician. The physician noted cause of the adverse event and marked its probability using the Naranjo adverse drug reaction probability scale. The Naranjo adverse drug reaction probability scale consists of 10 questions that are answered as either "Yes", "No", or "Do not know". Different point values (-1, 0, +1 or +2) are assigned to each answer. The adverse drug reaction is considered "definite" if the score is 9 or higher, "probable" if 5 to 8, "possible" if 1 to 4, and "doubtful" if 0 or less.

    Time frame: one month

07

Study locations

1 site
  • University Hospital Dubrava
    Zagreb, 10000, Croatia
08

References and documents

Publications

  • Marusic S, Melis P, Lucijanic M, Grgurevic I, Turcic P, Neto PRO, Bilic-Curcic I. Impact of pharmacotherapeutic education on medication adherence and adverse outcomes in patients with type 2 diabetes mellitus: a prospective, randomized study. Croat Med J. 2018 Dec 31;59(6):290-297. doi: 10.3325/cmj.2018.59.290. PubMed 30610771 ↗

Individual participant data

Plan to share: No

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Apr 2018 to primary completion in Jul 2018, 3 months.

Of 2,068 non-industry interventional studies with no phase under Diabetes Mellitus, Type 2, half reached primary completion within 21 months of starting (the median), counting those still running; a quarter within 10 and three quarters within 40. This study's 3 months is below that.

Counting every sponsor, half of 2,245 studies reached it within 21 months; a quarter within 10 and three quarters within 38.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 20, 2017
First posted
Feb 19, 2018
StartActual
Apr 1, 2018
Primary completionActual
Jul 1, 2018
CompletionActual
Jul 1, 2018
Last update
Nov 9, 2018
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Nov 9, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03438162
Lead sponsor
University Hospital Dubrava
Responsible party
Srećko Marušić (Principal investigator, University Hospital Dubrava) — Principal investigator
First posted
Feb 19, 2018
Start date
Apr 1, 2018
Primary completion
Jul 1, 2018
Completion
Jul 1, 2018
Last update
Nov 9, 2018

Study contacts

Srećko Marušić
study chair · University Hospital Dubrava

Oversight

Data monitoring committee
Yes
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 Nov 2018. You cannot join it, but the record below documents what was studied.

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