Atrial FibrillationNCT02839746
Treatment Convenience in Patients Treated With Dabigatran for Stroke Prophylaxis in Atrial Fibrillation (SPAF)
An observational study of Atrial Fibrillation, run by Boehringer Ingelheim at 1 site in Spain.
Trial summary
Describe patient and physician assessed factors for patient well-being when treated with Pradaxa for stroke and embolism prevention in atrial fibrillation either compared to previous antithrombotic treatment (switcher) Read more about this study
- Who is it for?
- Ages 18 to 99 years
- Conditions the study is for
- Atrial Fibrillation
- How many people
- 671 participants
- Where
- 1 siteSpain
- Study dates
- 13 Jun 2016to 10 Oct 2018
- Phase
- Observational
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 99 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: spanish patients with a diagnosis of non-valvular atrial fibrillation
Who may be able to join
- Written informed consent prior to participation
- Female and male patients 18 years of age or older with a diagnosis of non-valvular atrial fibrillation.
- At least 6 months of continuous vitamin K antagonist (VKA) treatment for stroke prevention prior to baseline assessment.
- Patients switched to Pradaxa® according to Summary of Product Characteristics, therapeutic positioning report from Spanish competent authorities and visa from each autonomous community.
Who cannot join
- Contraindication to the use of Pradaxa® or VKA as described in the Summary of Product Characteristics (SmPC)
- Patients receiving Pradaxa® or VKA for any other condition than stroke prevention in non-valvular atrial fibrillation.
- Current participation in any clinical trial of a drug or device
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Non-interventional Study Describing Treatment Convenience in Patients Treated With Dabigatran for Stroke Prophylaxis in Atrial Fibrillation (SPAF)
Describe patient and physician assessed factors for patient well-being when treated with Pradaxa for stroke and embolism prevention in atrial fibrillation either compared to previous antithrombotic treatment (switcher)
- Conditions
- Atrial Fibrillation
- Medical subject headings
- Atrial Fibrillation
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| Dabigatran | Patients switched from vitamin K antagonist (VKA) to dabigatran |
What is being measured
The primary outcome is the main question the study is designed to answer.
Mean of Perception of Anticoagulant Treatment Questionnaire 2 (PACT-Q2) Scores at Second Assessment Compared to Baseline Assessment
The PACT-Q is self-administered quest. which was developed as means to investigate patients' satisfaction with anticoagulant treatment \& treatment convenience in patients with deep venous thrombosis (DVT), pulmonary embolism (PE) or atrial fibrillation (AF). PACT-Q2 quest. is made up of two domains: (1) Convenience (13 items): This domain is calculated by adding inverted scores (6-item score) for each of the 13 items in question \& converting to a scale from 0 to 100. (2) Satisfaction with the anticoagulant treatment (7 items): This domain is calculated by adding scores for each of the 7 items in question \& converting to a scale from 0 to 100. The missing items have been replaced by the mean of non-missing items of the dimension (if 50% of items were completed, non-missing), in order to calculate domains score. The higher the score, the higher the convenience/satisfaction. The two domain scores are presented for Baseline, Visit 2 (second assessment) as mean \& standard deviation (SD).
Measured: When planned to be switched from VKA to Pradaxa® (At baseline, Visit 1), 7 to 124 days after starting treatment with Pradaxa® (initiation period, Visit 2)
Mean of Perception of Anticoagulant Treatment Questionnaire 2 (PACT-Q2) Scores at Last Assessment Compared to Baseline Assessment
The PACT-Q is self-administered quest. which was developed as means to investigate patients satisfaction with anticoagulant treatment \& treatment convenience in patients with deep venous thrombosis (DVT), pulmonary embolism (PE) or atrial fibrillation (AF). The PACT-Q2 quest. is made up of two domains: 1) Convenience (13 items): This domain is calculated by adding inverted scores (6-item score) for each of the 13 items in question, \&converting to a scale from 0 to 100. 2) Satisfaction with the anticoagulant treatment (7 items):This domain is calculated by adding scores for each of the 7 items in question, \& converting to a scale from 0 to 100.
The missing items have been replaced by the mean of non-missing items of the dimension (if 50% of items were completed, non-missing), in order to calculate domains score. The higher the score, the higher the convenience/satisfaction.
The two domain scores are presented for Baseline, Visit 3 (last assessment) as mean and standard deviation (SD).
Measured: When planned to be switched from VKA to Pradaxa® (At baseline, Visit 1), 125 to 365 days after starting treatment with Pradaxa® (continuation period, Visit 3)
Mean of Perception of Anticoagulant Treatment Questionnaire (PACT-Q2) Score at Last Assessment Compared to Second Assessment
The PACT-Q is self-administered quest. which was developed as means to investigate patients satisfaction with anticoagulant treatment \& treatment convenience in patients with DVT, PE or AF. The PACT-Q2 quest. is made up of two domains: 1) Convenience (13 items): This domain is calculated by adding inverted scores (6-item score) for each of the 13 items in question, \&converting to a scale from 0 to 100. 2) Satisfaction with the anticoagulant treatment (7 items):This domain is calculated by adding scores for each of the 7 items in question, \& converting to a scale from 0 to 100. The missing items have been replaced by the mean of non-missing items of dimension (if 50% of items were completed, non-missing), in order to calculate domains score. The higher the score, the higher the convenience/satisfaction.
The two domain scores are presented for Visit 2( second assessment), Visit 3 (last assessment) as mean and standard deviation (SD).
Measured: 7 to 124 days after starting treatment with Pradaxa® (initiation period, Visit 2), 125 to 365 days after starting treatment with Pradaxa® (continuation period, Visit 3)
Secondary outcomes (8)
Patient Characteristics at Baseline - CHA2DS2-VASc Stroke Risk Score and HAS-BLED Bleeding Risk Score
CHA2DS2-VASc stroke risk score is calculated based on following conditions: Congestive heart failure/left ventricular dysfunction, Hypertension, Age (≥ 75), Diabetes Mellitus,Stroke/Transient Ischaemic Attack (TIA)/thromboembolism,Vascular disease (history of myocardial infarction, peripheral artery disease or aortic plaque) ,Age 65-74, Sex category. HAS-BLED bleeding risk score is calculated based on following conditions: Uncontrolled hypertension with Systolic Blood pressure (SBP) ≥ 160 mmHg,Kidney failure,liver failure,History of stroke,History of bleeding, anaemia or predisposition to bleeding,Unstable/high or poor international normalized ratio (INR) (<60% of time within therapeutic range),Elderly (>65 years),Medications that affect haemostasis,Consumptions of ≥8 alcoholic drinks per week.CHA2DS2-VASc stroke risk score \& HAS-BLED bleeding risk score range from 0 to 9 with 0 being outcome with low stroke risk for CHA2DS2-VASc and being with low bleeding risk for HAS-BLED.
Measured: Baseline
Patient Characteristics at Baseline - Categorical Parameters
Categorical parameters of the patient characteristics at baseline included age, Risk factors associated with stroke and/or haemorrhage in the medical history (MH), co-morbidities (CoMo), concomitant medication (CM) and dosing of Pradaxa® (DoP).
Haemorrhagic risk (HAS-BLED) is categorized as Low risk (score 0), Moderate risk (score 1-2) and High Risk (score ≥3). Thromboembolic risk (CHA2DS2-VASc) is categorized as Low risk (score 0 in male and 1 in female), Moderate risk (score 1 in male and 2 in female) and High Risk (score ≥2 in male and ≥3 in female).
Stages of kidney disease are categorized based on Cockcroft-Gault review as below:
No kidney failure (> 80 ml/min), Mild kidney failure (50-80 ml/min), Moderate kidney failure (30-49 ml/min), Severe kidney failure (15-29 ml/min) and End-stage kidney failure/dialysis (< 15 ml/min).
Measured: Baseline
Patient Characteristics at Baseline - Creatinine Clearance
Creatinine clearance at baseline is a measure of the patient's kidney function and is one of the baseline patient characteristics.
Measured: Baseline
Patient Characteristics at Baseline - Vitamin K Antagonist Treatment Duration
Vitamin K Antagonist (VKA) treatment duration is one of the baseline patient characteristics.
Measured: Baseline
Patient Characteristics at Baseline - Reasons for Switching From VKAs to Pradaxa®
Categories of reasons for switching from VKAs to Pradaxa® are as below:
- Hypersensitivity (Hypersensitivity to the drug)
- Intracranial haemorrhage (Patients with a history of intracranial haemorrhage (ICH) (except during the acute phase) in whom the benefits of anticoagulation were deemed to outweigh the risk of haemorrhage)
- Ischaemic stroke (Patients with ischaemic stroke who present clinical and neuroimaging criteria indicating a high risk of ICH)
- Arterial thromboembolic episodes (Patients undergoing treatment with VKAs, suffering from severe arterial thromboembolic episodes despite good INR control)
- INR not in range (Patients who have started treatment with VKAs in whom it is not possible to keep the INR in range (2-3) despite good therapeutic compliance)
- INR management (Lack of access to conventional INR management)
- Pts decision (Patient's decision)
- Others.
A single patient may have specified more than one reason
Measured: Baseline
Reason for Changing the Dose of Pradaxa®: 150 mg/ Twice Daily (Bid) to 110 mg/Bid
Reasons for for changing the dose of Pradaxa®: 150 mg/bid to 110 mg/bid are categorized as below:
1] High risk of bleeding 2] Moderate renal failure 3] >80 years 4] Other reason
Measured: 7 to 124 days after starting treatment with Pradaxa® (initiation period, Visit 2), 125 to 365 days after starting treatment with Pradaxa® (continuation period, Visit 3)
Reason for Changing the Dose of Pradaxa®: 110 mg/Bid to 150 mg/Bid
Reasons for for changing the dose of Pradaxa®: 110 mg/bid to 150 mg/bid are categorized as below:
1] High risk of bleeding 2] Moderate renal failure 3] >80 years 4] Other reason
Measured: 7 to 124 days after starting treatment with Pradaxa® (initiation period, Visit 2), 125 to 365 days after starting treatment with Pradaxa® (continuation period, Visit 3)
Reasons for no Longer Receiving Pradaxa® Treatment
Reasons for no longer receiving Pradaxa® treatment categorized as below:
- Treatment change (Change of treatment (by patient or by investigator)
- Adverse event (Diarrhea, gastrointestinal discomfort, rectorrhagia, dyspepsia)
- Exitus
- Others
Measured: 7 to 124 days after starting treatment with Pradaxa® (initiation period, Visit 2), 125 to 365 days after starting treatment with Pradaxa® (continuation period, Visit 3)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted21 Jul 2016 (estimated)
- Study start13 Jun 2016
- Primary completion10 Oct 2018
- Study completion10 Oct 2018
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Atrial FibrillationStudies of the same condition, open and under way.
- More trials run by Boehringer IngelheimThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 671 participants (actual)
Sponsor and investigators
- Lead sponsor
- Boehringer Ingelheim
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Boehringer Ingelheim, Study chair, Boehringer Ingelheim
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02839746
- Sponsor's protocol ID
- 1160.253
- Status last verified
- Oct 2019
- First submitted
- 2 Jun 2016
- Last updated
- 1 Nov 2019
- Results posted
- Yes, on ClinicalTrials.gov
Study at a glance
From the registry record, last updated by the sponsor on 1 Nov 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Non-interventional Study Describing Treatment Convenience in Patients Treated With Dabigatran for Stroke Prophylaxis in Atrial Fibrillation (SPAF)
- ClinicalTrials.gov ID
- NCT02839746
- Acronym / sponsor ID
- 1160.253
- Conditions
- Atrial Fibrillation
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 671 participants (actual)
- Lead sponsor
- Boehringer IngelheimIndustry (pharma, biotech, devices)
- Study start
- 13 Jun 2016 (actual)
- Primary completion
- 10 Oct 2018 (actual)
- Study completion
- 10 Oct 2018 (actual)
- First posted
- 21 Jul 2016 (estimated)
- Results
- Posted 1 Nov 2019
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Describe patient and physician assessed factors for patient well-being when treated with Pradaxa for stroke and embolism prevention in atrial fibrillation either compared to previous antithrombotic treatment (switcher)
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Dabigatran | – | –Patients switched from vitamin K antagonist (VKA) to dabigatran |
Who may qualify
- Ages
- 18 to 99 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- spanish patients with a diagnosis of non-valvular atrial fibrillation
Key inclusion criteria (4 listed)
- Written informed consent prior to participation
- Female and male patients 18 years of age or older with a diagnosis of non-valvular atrial fibrillation.
- At least 6 months of continuous vitamin K antagonist (VKA) treatment for stroke prevention prior to baseline assessment.
- Patients switched to Pradaxa® according to Summary of Product Characteristics, therapeutic positioning report from Spanish competent authorities and visa from each autonomous community.
Key exclusion criteria (3 listed)
- Contraindication to the use of Pradaxa® or VKA as described in the Summary of Product Characteristics (SmPC)
- Patients receiving Pradaxa® or VKA for any other condition than stroke prevention in non-valvular atrial fibrillation.
- Current participation in any clinical trial of a drug or device
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Mean of Perception of Anticoagulant Treatment Questionnaire 2 (PACT-Q2) Scores at Second Assessment Compared to Baseline Assessment
Time frame: When planned to be switched from VKA to Pradaxa® (At baseline, Visit 1), 7 to 124 days after starting treatment with Pradaxa® (initiation period, Visit 2)
The PACT-Q is self-administered quest. which was developed as means to investigate patients' satisfaction with anticoagulant treatment \& treatment convenience in patients with deep venous thrombosis (DVT), pulmonary embolism (PE) or atrial fibrillation (AF). PACT-Q2 quest. is made up of two domains: (1) Convenience (13 items): This domain is calculated by adding inverted scores (6-item score) for each of the 13 items in question \& converting to a scale from 0 to 100. (2) Satisfaction with the anticoagulant treatment (7 items): This domain is calculated by adding scores for each of the 7 items in question \& converting to a scale from 0 to 100. The missing items have been replaced by the mean of non-missing items of the dimension (if 50% of items were completed, non-missing), in order to calculate domains score. The higher the score, the higher the convenience/satisfaction. The two domain scores are presented for Baseline, Visit 2 (second assessment) as mean \& standard deviation (SD).
Mean of Perception of Anticoagulant Treatment Questionnaire 2 (PACT-Q2) Scores at Last Assessment Compared to Baseline Assessment
Time frame: When planned to be switched from VKA to Pradaxa® (At baseline, Visit 1), 125 to 365 days after starting treatment with Pradaxa® (continuation period, Visit 3)
The PACT-Q is self-administered quest. which was developed as means to investigate patients satisfaction with anticoagulant treatment \& treatment convenience in patients with deep venous thrombosis (DVT), pulmonary embolism (PE) or atrial fibrillation (AF). The PACT-Q2 quest. is made up of two domains: 1) Convenience (13 items): This domain is calculated by adding inverted scores (6-item score) for each of the 13 items in question, \&converting to a scale from 0 to 100. 2) Satisfaction with the anticoagulant treatment (7 items):This domain is calculated by adding scores for each of the 7 items in question, \& converting to a scale from 0 to 100. The missing items have been replaced by the mean of non-missing items of the dimension (if 50% of items were completed, non-missing), in order to calculate domains score. The higher the score, the higher the convenience/satisfaction. The two domain scores are presented for Baseline, Visit 3 (last assessment) as mean and standard deviation (SD).
Mean of Perception of Anticoagulant Treatment Questionnaire (PACT-Q2) Score at Last Assessment Compared to Second Assessment
Time frame: 7 to 124 days after starting treatment with Pradaxa® (initiation period, Visit 2), 125 to 365 days after starting treatment with Pradaxa® (continuation period, Visit 3)
The PACT-Q is self-administered quest. which was developed as means to investigate patients satisfaction with anticoagulant treatment \& treatment convenience in patients with DVT, PE or AF. The PACT-Q2 quest. is made up of two domains: 1) Convenience (13 items): This domain is calculated by adding inverted scores (6-item score) for each of the 13 items in question, \&converting to a scale from 0 to 100. 2) Satisfaction with the anticoagulant treatment (7 items):This domain is calculated by adding scores for each of the 7 items in question, \& converting to a scale from 0 to 100. The missing items have been replaced by the mean of non-missing items of dimension (if 50% of items were completed, non-missing), in order to calculate domains score. The higher the score, the higher the convenience/satisfaction. The two domain scores are presented for Visit 2( second assessment), Visit 3 (last assessment) as mean and standard deviation (SD).
8 secondary outcomes
Patient Characteristics at Baseline - CHA2DS2-VASc Stroke Risk Score and HAS-BLED Bleeding Risk Score
Time frame: Baseline
Patient Characteristics at Baseline - Categorical Parameters
Time frame: Baseline
Patient Characteristics at Baseline - Creatinine Clearance
Time frame: Baseline
Patient Characteristics at Baseline - Vitamin K Antagonist Treatment Duration
Time frame: Baseline
Patient Characteristics at Baseline - Reasons for Switching From VKAs to Pradaxa®
Time frame: Baseline
Reason for Changing the Dose of Pradaxa®: 150 mg/ Twice Daily (Bid) to 110 mg/Bid
Time frame: 7 to 124 days after starting treatment with Pradaxa® (initiation period, Visit 2), 125 to 365 days after starting treatment with Pradaxa® (continuation period, Visit 3)
Reason for Changing the Dose of Pradaxa®: 110 mg/Bid to 150 mg/Bid
Time frame: 7 to 124 days after starting treatment with Pradaxa® (initiation period, Visit 2), 125 to 365 days after starting treatment with Pradaxa® (continuation period, Visit 3)
Reasons for no Longer Receiving Pradaxa® Treatment
Time frame: 7 to 124 days after starting treatment with Pradaxa® (initiation period, Visit 2), 125 to 365 days after starting treatment with Pradaxa® (continuation period, Visit 3)
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 1 Nov 2019.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Boehringer Ingelheim study chair
Boehringer Ingelheim
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Atrial Fibrillation, run by Boehringer Ingelheim at 1 site in Spain.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 1 Nov 2019. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Spain. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Yes. Results are posted in the registry (first posted 1 Nov 2019). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Mean of Perception of Anticoagulant Treatment Questionnaire 2 (PACT-Q2) Scores at Second Assessment Compared to Baseline Assessment (time frame: When planned to be switched from VKA to Pradaxa® (At baseline, Visit 1), 7 to 124 days after starting treatment with Pradaxa® (initiation period, Visit 2)). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 1 Nov 2019.