Abstract
Twenty-seven HIV-infected methadone maintenance patients who demonstrated problems adhering to zidovudine (AZT) were randomly assigned to a group that received eight weeks of weekday supervised therapy and dispensing of AZT or a group that received usual care of the clinic. Adherence was assessed by self-report, erythrocyte mean corpuscular volume (MCV), Medication Event Monitoring Systems (MEMS), and pill counts. Subjects in the intervention group demonstrated significantly higher MCV levels during the intervention period than usual care subjects, with similar but non-significant trends for the three other adherence measures. MEMS percent indicated significant group differences on weekdays, but not weekend days. There were no differences at a one-month follow-up. Results suggest supervised therapy and dispensing may be an effective strategy for improving AZT adherence, but only while provided. Further research is needed to establish the effects of larger and longer lasting interventions.
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