It is widely accepted in medical anthropology that the best compliance and the most success in treatment are achieved when the patient and healer share the same medical beliefs. The editor points out that the methodology is clear, but the results are difficult to interpret. Look over the dates of the references. This article is rather old. Keep that in mind.
Compliance is a problem with hypertension.
The condition is managed, not cured. Furthermore, it is invisible. The authors cite the estimate that only one-fourth of hypertensive persons are under treatment and only half of those actually comply. The authors don't mention side effects. They prescribe reserpine-a drug with many side effects and no longer a drug of choice.