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Decision Aid for Anticoagulation Duration After Unprovoked Venous Thromboembolism (DECIDE-VTE)

19 de junho de 2026 atualizado por: Marc Rodger, McGill University Health Centre/Research Institute of the McGill University Health Centre

Enabling and Engaging Patients to Decide Indefinite Versus Short-Term Anticoagulation for Venous Thromboembolism (DECIDE-VTE)

Venous thromboembolism (VTE), including deep vein thrombosis and pulmonary embolism, is a common condition that is typically treated with blood thinners (anticoagulants). After completing at least 3 months of treatment for a first unprovoked or weakly provoked VTE, patients and clinicians must decide whether to stop anticoagulation or continue treatment for a longer period. Continuing anticoagulation reduces the risk of another blood clot but increases the risk of bleeding. Because both options involve important benefits and risks, this decision should reflect the patient's values and preferences.

The DECIDE-VTE study will evaluate whether a patient decision aid can improve decision-making for patients facing this choice. The decision aid provides evidence-based information about the risks and benefits of continuing versus stopping anticoagulation and includes a values clarification exercise to help patients identify what matters most to them.

This multicentre batched stepped-wedge cluster randomized trial will be conducted in 12 thrombosis clinics across Canada. Clinics will transition from usual care to implementation of the patient decision aid according to a randomized schedule. The primary outcome is decisional conflict immediately following the anticoagulation decision visit, measured using the Decisional Conflict Scale. Secondary outcomes include patient knowledge, treatment decisions, decisional regret, concordance with the chosen treatment strategy, recurrent venous thromboembolism, major bleeding, all-cause mortality, and implementation outcomes.

Visão geral do estudo

Status

Ainda não está recrutando

Condições

Intervenção / Tratamento

Descrição detalhada

Venous thromboembolism (VTE), including deep vein thrombosis and pulmonary embolism, is commonly treated with anticoagulation. After completing initial anticoagulation for a first unprovoked or weakly provoked VTE, patients and clinicians must decide whether to discontinue anticoagulation or continue treatment long term. This is a preference-sensitive decision because continued anticoagulation reduces the risk of recurrent VTE but increases the risk of bleeding.

The DECIDE-VTE Patient Decision Aid was developed to support shared decision-making about anticoagulation duration. The tool provides structured information about treatment options, recurrence and bleeding risks, and includes a values-clarification exercise to help patients consider which outcomes and treatment burdens matter most to them.

This study is a pragmatic, multicentre, batched stepped-wedge cluster randomized trial. Participating thrombosis clinics begin in the usual care phase and transition to implementation of the DECIDE-VTE Patient Decision Aid according to a randomized schedule. Randomization occurs at the clinic level to reduce contamination between study conditions and to reflect real-world implementation of the decision aid into routine thrombosis clinic care.

The study will assess whether integrating the DECIDE-VTE Patient Decision Aid into clinical care improves decision quality compared with usual care, and will also evaluate implementation-related measures relevant to future use of the tool in practice.

Tipo de estudo

Intervencional

Inscrição (Estimado)

850

Estágio

  • Não aplicável

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Contato de estudo

Locais de estudo

  • Canadá
    • Alberta
      • Calgary, Alberta, Canadá, T2N 1N4
        • University Of Calgary
        • Contato:
        • Investigador principal:
          • Leslie Skieth, MD FRCPC
    • British Columbia
      • Vancouver, British Columbia, Canadá, V5Z 1N1
        • Vancouver General Hospital
        • Contato:
        • Investigador principal:
          • Rick Ikesaka, MD MSc. FRCPC DRCPSC
    • Ontario
      • Ottawa, Ontario, Canadá, K1H 8L6
        • Ottawa Hospital - General Campus
        • Contato:
        • Investigador principal:
          • Deborah Siegal, MD MSc FRCPC
    • Quebec
      • Montreal, Quebec, Canadá, H3T 1E2
        • Sir Mortimer B. Davis Jewish General Hospital
        • Contato:
      • Montreal, Quebec, Canadá, H4A 3J1
        • Research Institute of McGill University Health Centre
        • Contato:

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

  • Adulto
  • Adulto mais velho

Aceita Voluntários Saudáveis

Não

Descrição

Inclusion Criteria:

  • Age 18 years or older
  • First episode of objectively confirmed unprovoked or weakly provoked venous thromboembolism (VTE)
  • Objectively confirmed proximal deep vein thrombosis and/or segmental or greater pulmonary embolism
  • Completed at least 3 months of therapeutic anticoagulation and currently receiving anticoagulation
  • Enrollment within 12 months of diagnosis of the index/qualifying VTE event
  • Able to provide written informed consent
  • Able to participate in shared decision-making in English or French

Exclusion Criteria:

  • Recurrent unprovoked or weakly provoked VTE I(i.e. multiple unprovoked/weakly provoked VTE)
  • Index/qualifying VTE is a strongly provoked VTE (e.g., associated with major surgery, major trauma, plaster cast immobilization, or prolonged bed rest)
  • Index/qualifying VTE associated with a persistent strong provoking risk factor (e.g., active cancer or ongoing immobility)
  • Women at very low recurrence risk (HERDOO2 score 0-1)
  • High bleeding risk such that anticoagulation should be discontinued
  • Requirement for long-term anticoagulation for another indication (e.g., atrial fibrillation)
  • Prior dedicated long-term anticoagulation Decision Visit regarding anticoagulation duration

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Finalidade Principal: Cuidados de suporte
  • Alocação: Randomizado
  • Modelo Intervencional: Atribuição cruzada
  • Mascaramento: Nenhum (rótulo aberto)

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Sem intervenção: Usual Care
Participants receive standard thrombosis clinic care and clinician-patient discussions regarding continuation versus discontinuation of anticoagulation following a first unprovoked or weakly provoked venous thromboembolism. No structured patient decision aid is used.
Experimental: DECIDE-VTE Patient Decision Aid
Participants receive the DECIDE-VTE Patient Decision Aid in addition to usual thrombosis clinic care. The decision aid provides evidence-based information regarding the risks and benefits of continuing versus discontinuing anticoagulation after a first unprovoked or weakly provoked venous thromboembolism and includes a structured values clarification exercise to support shared decision-making. Participants and clinicians make the final treatment decision together during the Decision Visit.
Comportamental: DECIDE-VTE Patient Decision Aid
The DECIDE-VTE Patient Decision Aid is a bilingual (English/French) evidence-based decision support tool designed for adults with a first unprovoked or weakly provoked venous thromboembolism who are deciding whether to continue or discontinue anticoagulation after completing at least 3 months of therapy. The decision aid presents balanced information regarding the risks and benefits of extended anticoagulation, including risks of recurrent venous thromboembolism and major bleeding, and incorporates a structured values clarification exercise to support shared decision-making between patients and clinicians during the anticoagulation Decision Visit.

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Decisional Conflict Scale (DCS) Total Score
Prazo: Decision Visit (Day 0)
Decisional conflict measured using the validated 16-item Decisional Conflict Scale (DCS). Total scores range from 0 to 100, with higher scores indicating greater decisional conflict.
Decision Visit (Day 0)

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
VTE Knowledge Assessment Score
Prazo: Decision Visit (Day 0)
Patient knowledge regarding recurrent venous thromboembolism and bleeding risks assessed using a 6-item true/false questionnaire. Scores range from 0 to 6, with higher scores indicating greater knowledge.
Decision Visit (Day 0)
Treatment Decision
Prazo: Decision Visit (Day 0)
Patient decision regarding continuation versus discontinuation of anticoagulation therapy.
Decision Visit (Day 0)
Decisional Regret Scale (DRS) Score
Prazo: 3-Month Follow-Up Visit (Day 90 ± 14 days)
Decisional regret measured using the validated 5-item Decisional Regret Scale (DRS). Scores range from 0 to 100, with higher scores indicating greater regret regarding the treatment decision.
3-Month Follow-Up Visit (Day 90 ± 14 days)
Concordance With Treatment Decision
Prazo: 3-Month Follow-Up Visit (Day 90 ± 14 days) and 12-Month Follow-Up Visit (Day 365 ± 60 days)
Agreement between the treatment decision made at the Decision Visit (Day 0) and participant-reported anticoagulant use status at follow-up.
3-Month Follow-Up Visit (Day 90 ± 14 days) and 12-Month Follow-Up Visit (Day 365 ± 60 days)
Recurrent Venous Thromboembolism
Prazo: 12-Month Follow-Up Visit (Day 365 ± 60 days)
Adjudicated objectively confirmed recurrent venous thromboembolism assessed using the INVENT VERDICT adjudication process.
12-Month Follow-Up Visit (Day 365 ± 60 days)
Major Bleeding
Prazo: 12-Month Follow-Up Visit (Day 365 ± 60 days)
Adjudicated objectively confirmed major bleeding defined according to International Society on Thrombosis and Haemostasis criteria.
12-Month Follow-Up Visit (Day 365 ± 60 days)
All-Cause Mortality
Prazo: 12-Month Follow-Up Visit (Day 365 ± 60 days)
Death from any cause identified through medical record review and, where necessary, provincial vital statistics records.
12-Month Follow-Up Visit (Day 365 ± 60 days)

Outras medidas de resultado

Medida de resultado
Descrição da medida
Prazo
Patient Decision Aid Use Time
Prazo: Decision Visit (Day 0)
Time in minutes spent interacting with the DECIDE-VTE Patient Decision Aid.
Decision Visit (Day 0)
Physician Visit Duration
Prazo: Decision Visit (Day 0)
Time in minutes from the participant entering the clinic room with the physician until completion of the clinical encounter.
Decision Visit (Day 0)

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

McGill University Health Centre/Research Institute of the McGill University Health Centre

Investigadores

  • Investigador principal: Marc Rodger, MD MSc FRCPC, McGill University

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Estimado)

1 de setembro de 2026

Conclusão Primária (Estimado)

1 de março de 2028

Conclusão do estudo (Estimado)

1 de março de 2029

Datas de inscrição no estudo

Enviado pela primeira vez

5 de junho de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

16 de junho de 2026

Primeira postagem (Real)

22 de junho de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

24 de junho de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

19 de junho de 2026

Última verificação

1 de junho de 2026

Mais Informações

Termos relacionados a este estudo

Palavras-chave

Termos MeSH relevantes adicionais

Outros números de identificação do estudo

  • DECIDE-VTE-SWRCT
  • 202509PJT-552796-CID-CFAC-5562 (Outro identificador: Canadian Institute of Health Research)

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

SIM

Prazo de Compartilhamento de IPD

TBD near end of follow-up of last participant

Critérios de acesso de compartilhamento IPD

contact study PI

Tipo de informação de suporte de compartilhamento de IPD

  • PROTOCOLO DE ESTUDO
  • SEIVA

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Não

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .

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