Medication non-adherence in a cohort of chronically ill Australians: A case of missed opportunities.

Abstract

This study investigated the effect of management - including home medicines reviews and chronic disease management plans funded through the Medicare Benefits Schedule - on self-reported medication non-adherence. An observational cohort study including 244 individuals with an exacerbation of chronic illness enrolled into the Care Navigation randomised controlled trial of integrated care. Non-adherence was measured using the Morisky-Greene-Levine self-reported adherence tool. The cohort comprised an equal number of older men and women with, on average, three chronic diseases, receiving between five and 10 unique medications each month and visiting a general practitioner (GP) more than 50 times in the year prior to completing the questionnaire. Forty per cent reported non-adherence, which was greater in males (relative risk [RR]: 1.73; 95% confidence interval [CI]: 1.25, 2.54) and in patients reporting a recent fall (RR 1.40; 95% CI: 1.02, 1.89). GP-initiated chronic disease management programs did not influence adherence. Despite almost weekly contact with GPs, two in five patients were non-adherent. Better methods of encouraging adherence are needed.