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Medication Nonadherence in Breast Cancer Survivors

J Oncol Pract; ePub 2016 Jul 12; Yang, Neugut, et al

Medication adherence for chronic diseases decreased in breast cancer (BC) survivors in the first year after breast cancer treatment, according to a recent study of 36,149 women aged >18 years and diagnosed with breast cancer between January 1, 2009 and December 31, 2013. Prescriptions were identified for the following non-cancer-related conditions: hypertension, thyroid disease, hyperlipidemia, gastroesophageal reflux disease, diabetes, and osteoporosis. Adherence was defined as a medication possession ratio ≥80%. Researchers found:

• The average adherence to these medications before BC was 91.4%.

• Adherence decreased after BC treatment to 77.9%.

• Nonadherence ranged from 15.6% to 38% among drugs for each condition.

• Older age, insurance type, number of medications, and comorbid conditions were determined as factors associated with an increase in nonadherence.

Citation: Yang J, Neugut AI, Wright JD, Accordino M, Hershman DL. Nonadherence to oral medications for chronic conditions in breast cancer survivors. [Published online ahead of print July 12, 2016]. J Oncol Pract. doi:10.1200/JOP.2016.011742.