The impact of innovative packaging on adherence and treatment outcomes in elderly patients with hypertension
This study compares compliance rates of an antihypertensive drug administered to some elderly patients in a bottle and others in a blister. The results of this study continue to prove the point that calendarized blister packaging can provide increases in patient adherence. In the OSU research, 88 adults, all 65+ years of age, were included in the study. All had blood pressure readings of at least 140/90. Forty-eight participants received Prinivil in blister packs with compliance-prompting features. These partipants constituted the study group. Forty received Prinivil in traditional pharmacy vials and composed the control group. The patients were tracked for 12 months.
Over these months, the percent of on-time refills of the control group was only 66.1%, while the study group’s percent of on-time refills was 80.4%. Dramatic improvements in blood pressure were also measured in the study group. The change in DBP of the control group was -17% and SBP was -40%. For the study group , DBP was -50% and SBP was – 57%. The conclusions drawn by the researchers: “Patients in the study group had better adherence as
measured by: 1) Significantly more likely to refill prescriptions on time; and 2) Medication possession ratios significantly higher for study group (MRP = “proportion of days a patient has medication available to be taken”) and At 12 months, a significantly greater proportion of patients in the study group had lower diastolic blood pressure (compared to baseline) than patients in the control group.