Collaboration to Reduce Disparities in Hypertension

University of Pennsylvania

Status and phase: Completed; Phase 4

Conditions: Hypertension

Treatments: Behavioral: Computer; Behavioral: Reduction in financial barrier; Behavioral: Computer intervention & reduction of financial barrier; Behavioral: Control

Study type: Interventional

Funder types: Other; Industry

Identifiers

NCT00133068

707850

Details and patient eligibility

About

A large number of African-American and low socioeconomic patients have poorly controlled high blood pressure because of not being able to take their high blood pressure medications. This puts these patients at higher risk of heart and kidney disease, stroke and death. This study is designed to reduce the barriers that prevent patients from taking their high blood pressure medications.

Full description

The objective of this study is to determine the effectiveness and cost-effectiveness of two interventions aimed at reducing barriers to blood pressure (BP) control in an indigent and African-American population. Specifically, we will conduct a randomized controlled trial comparing BP control using either: (1) reimbursing patients for filling prescriptions (reimbursement arm); (2) a computer-based behavioral intervention (behavioral arm); (3) both the reimbursement and behavioral arms (combined arms); or (4) neither.

The ultimate goal of this study is to reduce the incidence of HTN-related CVD among these populations thereby reducing cardiovascular health disparities. Specific aims of the study are to:

1. test whether receiving money each time the patient fills a prescription for medications improves BP control by a clinically significant amount.

   H1: Reimbursing patients for filling prescriptions will significantly improve BP control.

2. test whether a computer-based behavioral intervention improves BP control by a clinically significant amount.

   H2: A computer-based behavioral intervention will significantly improve BP control.

3. test whether the two interventions are more effective in improving BP control than either alone.

   H3: The effect of improving BP control of administering both interventions together will be greater than the sum of the individual effects of each intervention alone.

4. examine the relative cost effectiveness of reimbursement for filling prescriptions, a computer-based behavioral intervention, and the combination of the two.

H4: Both interventions will be cost-effective relative to other commonly-covered services.

Enrollment: 802 patients

Sex: All

Ages: 21+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Patients of the Philadelphia Veterans Administration Hospital Primary Care Clinic, PinnacleHealth Adult Outpatient Clinics and the VA Pittsburgh Healthcare System who have a diagnosis of hypertension; are currently taking antihypertensive medications; and have elevated blood pressure.

Exclusion criteria

• Under 21 years of age

• Have a diagnosis of:

  • Atrial fibrillation;
  • Metastatic cancer;
  • End stage renal disease (ESRD) with dialysis;
  • Dementia;
  • New York Heart Association (NYHA) class IV congestive heart failure (CHF);
  • Blind or deaf;
  • Other reason for life expectancy of less than 1 year.

• Are currently participating in another experimental study

Trial design

Primary purpose: Prevention

Allocation: Randomized

Interventional model: Factorial Assignment

Masking: None (Open label)

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802 participants in 4 patient groups

1

Other group

Description:

Control

Treatment:

Behavioral: Control

2

Experimental group

Description:

Reduction of financial barrier

Treatment:

Behavioral: Reduction in financial barrier

3

Experimental group

Description:

Computer Intervention

Treatment:

Behavioral: Computer

4

Experimental group

Description:

Reduction of financial barrier and Computer Intervention

Treatment:

Behavioral: Computer intervention & reduction of financial barrier