Failure of educational videotapes to improve medication compliance in a health maintenance organization

Abstract

The value of mailed educational videotapes as a means of enhancing compliance with drug therapy was studied. Members of a health maintenance organization with a pharmacy claim for benazepril, metoprolol, simvastatin, or transdermal estrogen were randomly assigned to a study group or a control group. Subjects in the study group were mailed one of four videotape programs giving information on the drug prescribed and the inferred disease state. Control subjects received no educational materials. Subjects were enrolled from July 1, 1993, through January 2, 1994. Refill data were collected from July 1, 1993, through April 1, 1994. The medication possession ratio (MPR) was calculated as the total number of days' supply of a drug obtained by a member divided by the number of days between the time of enrollment and April 1, 1994, or the date the member was terminated from the plan. A subject was deemed compliant if his or her MPR was > or = 0.80. There were no significant differences in mean MPRs between the study group (n = 1993) and the control group (n = 2253). None of the mean MPRs was > or = 0.80, although 44% of control subjects and 46% of study-group subjects were compliant. Of 97 respondents to a survey mailed to a randomly selected subset of the study group, almost 87% reported that they had viewed the videotapes, and of these subjects, about 88% said they found them very useful or somewhat useful. A one-time mailing of videotapes to patients, with no individual follow-up, did not increase compliance with the medications monitored.