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Storytelling may help control blood pressure in African-Americans

Controlling blood pressure is not only a medical challenge, but a social one as well. Because patients are required to strictly adhere to a treatment plan that may include medication, dietary restrictions and regular doctor visits, the ideas of wellness and health are also powerful parts of the social reinforcement needed for behavioral change.

This is especially true in the African American population, which is particularly susceptible to hypertension. Social and cultural barriers have been found to contribute to African American patients being far more likely than white patients to suffer from uncontrolled high blood pressure and resulting complications.

A new study suggests that a storytelling approachin which recognizable members of a community provide positive messages aimed at controlling hypertension through diet and medication adherencemay offer a unique opportunity to communicate positive disease management choices in a culturally appropriate context.

Researchers at UMass Medical School, working with colleagues at Cooper Green Mercy Hospital and the University of Alabama at Birmingham have identified one promising approach. They identified "exceptionally eloquent and persuasive" patients with hypertension from focus groups where blood pressure control and the benefits of intervention were discussed; these volunteers were then videotaped, and edited DVDs, distilled from 80 hours of taping, were created.

The study, "Stories to Improve Blood Pressure: Findings from a Culturally Sensitive Randomized Trial," appears in the Jan. 18 issue of the Annals of Internal Medicine. Researchers randomly assigned 299 African American patients with hypertension to receive either usual care or to view three videos that presented stories of real patients with hypertension. Among patients who had uncontrolled hypertension, those assigned to view the stories had better blood pressure control than those assigned to usual carethe first such study that based a health intervention for hypertensive African Americans on positive, culturally sensitive storytelling.

"Overall," the authors wrote, "Among the 300 patients randomized, we found a difference in blood pressure favoring the intervention group, and the significance of this difference was driven by the positive effect among those with uncontrolled blood pressure. Patients with uncontrolled hypertension who were randomized to the intervention group experienced a 10 mmHg advantage in systolic blood pressure reduction relative to control Meaningful advantages were also found for diastolic pressure among the uncontrolled substrata. Blood pressures for both groups subsequently increased over time, but the relative advantage for the intervention group was maintained until the end of follow up."

What accounts for the result? Although there is no direct evidence about the mechanism by which the intervention worked, the researchers believe that the DVDs provided a "parasocial" interaction, one that rendered the viewer of the messages more susceptible to behavior change. "In prior hypertension work, wetranslated patient stories into re-enactments using trained actors using high production quality in studio. To maximize [the] para-social interaction [in this study], we enhanced the realism of the current intervention by purposefully avoiding the studio, taping patients in the actual hypertension clinic."


Contact: Mark Shelton
University of Massachusetts Medical School

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