CClinicalTrials.gg
CompletedNCT02480920NOAC-TRUpdated Apr 9, 2019Results posted

Adherence to New Oral Anticoagulation Therapy in Turkey

An observational study in Atrial Fibrillation, sponsored by Cardiovascular Academy Society, Turkey. Completed at 1 site in Turkey. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2019-04-09.

Sponsored by Cardiovascular Academy Society, Turkey · Observational

Study type
Observational
Model
Cohort
Time perspective
Retrospective
Enrollment
2,738
Ages
18 Years and older
Sex
All
01

Study summary

This study will compose a national database of drug adherence and investigate the factors that affect drug adherence in patients taking new oral anticoagulation therapy in Turkish Population.

Read the detailed description

NOACs have several clinical and pharmacological advantages over warfarin however suboptimal adherence is one of the most common causes of failure to respond to medications and outcomes.

This observational multicenter, retrospective study, will compose a national database of drug adherence and investigate the factors that affect drug adherence in patients taking new oral anticoagulation therapy in Turkey.

Social support and adherence to therapy factors that may affect drug adherence and adverse events will be assessed by self-report questionnaires.

Non-adherence will be tested for demographic, clinical, awareness of NOAC therapy and socioeconomic factors.

02

Conditions studied

  • Atrial Fibrillation

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Keywords

  • Atrial fibrillation Drug Adherence
  • New Oral Anticoagulants
  • Drug Adherence
03

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

Outpatients using a NOAC for at least 3 months duration, with a primary diagnosis of new-onset, non-valvular atrial fibrillation

Inclusion criteria

  • Patients >18 years old
  • Outpatients using a NOAC for at least 3 months duration, with a primary diagnosis of new-onset, non-valvular atrial fibrillation
  • Patients signed patient informed sheet and informed consent form

Exclusion criteria

Exclusion Criteria:

  • Patients under 18 years old
  • Patients refused to sign informed consent form
04

Study design

Observational model
Cohort
Time perspective
Retrospective
Enrollment
2,738 participants (actual)
Patient registry
No
05

What researchers measure

Primary outcomes

  1. Compliance of NOACs in Turkish Population

    Factors that may affect drug adherence and adverse events will be assessed by self-report questionnaires. Non-adherence will be tested for demographic, clinical, awareness of NOAC therapy and socioeconomic factors. The validity of the Morisky Adherence Scale had already been demonstrated with regard to medication adherence in patients receiving vitamin K antagonists. An extended 8-item Morisky scale was used instead of the original 4-item Morisky scale in order to better identify the situations and the conditions that could affect medication adherence and to better assess the psychometric features.The reliability and the validity of the 8-item Morisky Adherence Scale translated into Turkish had been demonstrated in Turkish population by previous studies.

    Time frame: 10 months

06

Results

Posted Jan 31, 2019

Participant flow

Participant flow — Overall Study
MilestoneStudy Popülation: Who Received NOAC for More Than 3 Months
Started2738
Completed2738
Not completed0

Outcome measures

PrimaryCompliance of NOACs in Turkish Population

Factors that may affect drug adherence and adverse events will be assessed by self-report questionnaires. Non-adherence will be tested for demographic, clinical, awareness of NOAC therapy and socioeconomic factors. The validity of the Morisky Adherence Scale had already been demonstrated with regard to medication adherence in patients receiving vitamin K antagonists. An extended 8-item Morisky scale was used instead of the original 4-item Morisky scale in order to better identify the situations and the conditions that could affect medication adherence and to better assess the psychometric features.The reliability and the validity of the 8-item Morisky Adherence Scale translated into Turkish had been demonstrated in Turkish population by previous studies.

Time frame:
10 months
Reported as:
Count of participants · Participants
Compliance of NOACs in Turkish Population
ParticipantsStudy Popülation: Who Received NOAC for More Than 3 Months
low adherence1342
high and medium adherence1036

Adverse events

Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Advers Events—687/2,738 (25.1%)0/2,738 (0%)
Most frequent serious events
Most frequent serious events
EventAdvers Events
BleedingGeneral disorders577/2738
StrokeNervous system disorders100/2738
Systemic EmbolismVascular disorders10/2738

Baseline characteristics

Age, Continuous
Age, Continuous(years)Study Population
Mean70 ± 10
Sex: Female, Male
Sex: Female, Male(Participants)Study Population
Female1623
Male1115
07

Study locations

1 site
  • Volkan Emren
    Afyonkarahi̇sar, Turkey
08

Registry details

Key details

Study ID
NCT02480920
Lead sponsor
Cardiovascular Academy Society, Turkey
Responsible party
Sponsor
First posted
Jun 25, 2015
Start date
Jul 2015
Primary completion
Mar 2016
Completion
Apr 2016
Results posted
Jan 31, 2019
Last update
Apr 9, 2019

Study contacts

Volkan Emren, MD
principal investigator · Cardiovascular Academy Society, İzmir, Turkey

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Apr 2019. You cannot join it, but the record below documents what was studied.

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