- ICH GCP
- Registro de ensaios clínicos dos EUA
- Ensaio Clínico NCT00201084
Physician Uncertainty Reduction for Hypertension
Visão geral do estudo
Status
Intervenção / Tratamento
Descrição detalhada
BACKGROUND:
A large amount of literature suggests that the majority of "uncontrolled" hypertensives are under medical care, and that lack of control is largely explained by physicians not intensifying treatment to achieve the BP targets recommended in the national guidelines. Traditional physician education, feedback, and reminders have a limited effect in promoting a rapid rate of guideline implementation. The theoretical framework of diffusion of innovations suggests that providing physicians with tools to reduce uncertainty about the attributes of a guideline may accelerate the adoption process. The presumed barriers to treatment intensification for uncontrolled hypertension are: 1) uncertainty over the patient's "true" BP; 2) uncertainty over whether the patient is adherent to medications already prescribed; and 3) uncertainty over the benefits of adding medications when patients express preference for lifestyle modification.
DESIGN NARRATIVE:
This cluster randomized trial in 10 primary care clinics (5 intervention and 5 control) will test the hypothesis that an intervention based on diffusion of innovations theory, and targeting provider treatment actions, will increase the prevalence of BP control to Joint National Committee-7(JNC-7) recommended levels in African American patients (greater than 140/90 mm Hg or greater 130/80 mm Hg if the patient has diabetes). The uncertainty reduction tools in the "Uncertainty Reduction to Accelerate Diffusion (URAD)" practices will include: 24-hour ambulatory BP monitoring, electronic bottle-cap monitoring of medication adherence, and medication and lifestyle counseling. The "Usual Practice (UP)" physicians will receive education about the guidelines and a "placebo" chart form indicating the patient is being followed in a BP control study. The 10 participating clinics represent a large, multi-site private group practice and a public health care system. Sixty-seven patients per clinic (670 total) will be enrolled when the intervention is initiated, and their BP and self-reported medication and lifestyle adherence will be monitored for two years. Sixty percent of the sample will be African American, and the study will have 90% power to detect a difference of 20% in the prevalence of hypertension control in the African Americans as a result of the intervention (50% control in URAD clinics vs. 30% control UP clinics). Secondary endpoints will include BP measurements by study staff under standardized conditions, physician treatment intensification actions, patient adherence, characteristics of doctor-patient communication associated with treatment action, use of the URAD components, and physician knowledge and beliefs about the JNC 7 guidelines and their relationship to BP control. Analysis of secondary endpoints will include race. The research team has collaborated with both health systems in previous studies, and is experienced in conducting hypertension control and behavioral intervention studies in the target population.
Tipo de estudo
Inscrição (Real)
Estágio
- Não aplicável
Contactos e Locais
Locais de estudo
-
-
Texas
-
Houston, Texas, Estados Unidos, 77098
- Baylor College of Medicine
-
-
Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
- Filho
- Adulto
- Adulto mais velho
Aceita Voluntários Saudáveis
Gêneros Elegíveis para o Estudo
Descrição
Inclusion Criteria:
- Kept appointment on index visit day (see patient sampling and recruitment methods below)
- Had one previous visit to the setting within the past year and identified the setting as his/her usual source of care
- Average clinic BP on index visit and one most recent previous visit was equal to or greater than 140 mm Hg systolic or 90 mm Hg diastolic (130/80 mm Hg if diabetic)
- Acknowledges understanding of the study goals and methods and gives informed consent to participate in study measurements and other procedures
Exclusion Criteria:
- Cognitive or other functional impairment sufficient to limit patient's ability to give informed consent, keep follow-up appointments, and participate actively in adherence to his or her treatment regimen
- Renal insufficiencies or renal failure based on a recent serum creatinine greater than 2.0 or chart diagnosis
- Planning to leave the Houston area within the next two years
- Severe, life-threatening illness that makes hypertension treatment a secondary priority
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
- Finalidade Principal: Tratamento
- Alocação: Randomizado
- Modelo Intervencional: Atribuição Paralela
- Mascaramento: Nenhum (rótulo aberto)
Armas e Intervenções
Grupo de Participantes / Braço |
Intervenção / Tratamento |
---|---|
Comparador Ativo: 1
Uncertainty reduction tools, at physician discretion, 24 hour ambulatory BP monitoring and/or electronic bottle cap monitoring and/or lifestyle counseling
|
At physician discretion, 24 hour ambulatory BP monitoring and/or electronic bottle cap monitoring and/or lifestyle counseling
|
Sem intervenção: 2
Usual primary care
|
O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Prazo |
---|---|
Expressed as the proportion of patients with average clinic BP less than 140/90 mm Hg in the previous two visits (130/80 mm Hg if the patient also has diabetes)
Prazo: 24 months
|
24 months
|
Medidas de resultados secundários
Medida de resultado |
Prazo |
---|---|
Actual measure clinic systolic and diastolic BP, patient physician communication patterns
Prazo: 24 months
|
24 months
|
Patient adherence to medication and healthy lifestyle
Prazo: 24 months
|
24 months
|
Physician knowledge, attitude, and beliefs about JNC-7 goals and barriers to achievement of the treatment goals and cost
Prazo: 24 months
|
24 months
|
Colaboradores e Investigadores
Patrocinador
Colaboradores
Investigadores
- Investigador principal: David J. Hyman, MD, Baylor College of Medicine
Publicações e links úteis
Publicações Gerais
- Pavlik VN, Greisinger AJ, Pool J, Haidet P, Hyman DJ. Does reducing physician uncertainty improve hypertension control?: rationale and methods. Circ Cardiovasc Qual Outcomes. 2009 May;2(3):257-63. doi: 10.1161/CIRCOUTCOMES.109.849984.
- Grigoryan L, Pavlik VN, Hyman DJ. Characteristics, drug combinations and dosages of primary care patients with uncontrolled ambulatory blood pressure and high medication adherence. J Am Soc Hypertens. 2013 Nov-Dec;7(6):471-6. doi: 10.1016/j.jash.2013.06.004. Epub 2013 Jul 23.
- Grigoryan L, Pavlik VN, Hyman DJ. Predictors of antihypertensive medication adherence in two urban health-care systems. Am J Hypertens. 2012 Jul;25(7):735-8. doi: 10.1038/ajh.2012.30. Epub 2012 Mar 22.
- Hyman DJ, Pavlik VN, Greisinger AJ, Chan W, Bayona J, Mansyur C, Simms V, Pool J. Effect of a physician uncertainty reduction intervention on blood pressure in uncontrolled hypertensives--a cluster randomized trial. J Gen Intern Med. 2012 Apr;27(4):413-9. doi: 10.1007/s11606-011-1888-1. Epub 2011 Oct 27.
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo
Conclusão Primária (Real)
Conclusão do estudo (Real)
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Primeira postagem (Estimativa)
Atualizações de registro de estudo
Última Atualização Postada (Estimativa)
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Mais Informações
Termos relacionados a este estudo
Termos MeSH relevantes adicionais
Outros números de identificação do estudo
- 276
- R01HL078589 (Concessão/Contrato do NIH dos EUA)
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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