Abstract P1-08-21: Association of depression and anxiety disorder with the risk of mortality in breast cancer: A national health insurance service study in South Korea
2019
PURPOSE: To examine whether depression, anxiety disorder and their co-occurrence would increase the risk of mortality in patients with breast cancer, and whether antidepressant treatment would reduce the same. PATIENTS AND METHODS: Data were retrieved from the database of the Korean National Health Insurance Service. Of 145,251 patients diagnosed with breast cancer between 2007 and 2014, 20,870 patients diagnosed with depression or anxiety disorder one year before breast cancer diagnosis were excluded. Thus, data of 124,381 patients were included in this study. RESULTS: Anxiety disorder was more prevalent than depression in patients with breast cancer, and similar factors were associated with both depression and anxiety disorder. Overall, female sex, older age, residence in metropolitan areas, lower income, higher comorbidity, carcinoma in situ, and the receipt of any type of cancer therapies were associated with an increased risk of depression or anxiety disorder. Depression and anxiety disorder were associated with an increased risk of mortality (Hazard Ratio (HR) = 1.26, 95% CI=1.18–1.36; HR=1.14, 95% CI=1.08–1.22, respectively) and their co-occurrence further increased the risk (HR=1.38, 95% CI=1.24–1.54). Antidepressant treatment was related to a reduced risk of mortality. Compared to patients with no depression, among those with depression, the risk of mortality was 2.18 times higher (95% CI=1.69–2.81) in patients who did not receive antidepressant treatment and 1.25 times higher (95% CI =1.17–1.32) in those who received antidepressant treatment. CONCLUSION: The current findings suggest that psychiatric comorbidities are markers of increased mortality risk in patients with breast cancer. This underscores the need for screening and treating depression and anxiety disorders to improve survival in breast cancer. Citation Format: Kim YS, Shim E-J, Lee JW, Cho J, Jung HK, Kim NH, Lee JE, Min J, Noh WC, Park S-H. Association of depression and anxiety disorder with the risk of mortality in breast cancer: A national health insurance service study in South Korea [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P1-08-21.
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