Salene M W Jones1, Andrea Z LaCroix2, Wenjun Li3, Oleg Zaslavsky4, Sylvia Wassertheil-Smoller5, Julie Weitlauf6,7, Gretchen A Brenes8, Rami Nassir9, Judith K Ockene3, Graciela Caire-Juvera10, Suzanne C Danhauer8. 1. Group Health Research Institute, 1730 Minor Ave, Seattle, WA, 98101, USA. jones.s@ghc.org. 2. University of California, San Diego, La Jolla, CA, 92093, USA. 3. University of Massachusetts Medical School, Worcester, MA, 01655, USA. 4. University of Haifa, Haifa, Israel. 5. Albert Einstein College of Medicine, Bronx, NY, 10461, USA. 6. Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA. 7. Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA, 94305, USA. 8. Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA. 9. University of California, Davis, Davis, CA, 95616, USA. 10. Center for Research on Food and Development, Hermosillo, México.
Abstract
PURPOSE: Distress and reduced quality of life (QOL) are common among people with cancer. No study has compared these variables after breast cancer diagnosis to pre-cancer diagnosis levels. METHODS: Data on women with breast cancer 50 years of age or older (n = 6949) were analyzed from the Women's Health Initiative (1993-2013). Health-related QOL (physical function, mental health) was measured using Rand-36. Depressive symptoms were measured with the six-item Center for Epidemiologic Studies Depression scale. Assessments occurred before and after the cancer diagnosis. Hierarchical linear modeling compared pre-cancer QOL and depressive symptoms to levels post-diagnosis and tested whether pre-cancer physical activity, stressful life events, sleep disturbance, and pain predicted post-diagnosis outcomes. RESULTS: Compared with pre-cancer levels, depressive symptoms increased (20.0% increase at 0-6 months, 12.9% increase at 6-12 months), while physical function (-3.882 points at 0-6 months, -3.545 at 6-12 months) and mental health decreased (-2.899 points at 0-6 months, -1.672 at 6-12 months) in the first year after diagnosis (all p < .01). Depressive symptoms returned to pre-cancer levels after 10 years, but QOL remained significantly lower. At more than 10 years post-diagnosis, physical function was 2.379 points lower than pre-cancer levels (p < 0.01) while mental health was 1.922 points lower (p < 0.01). All pre-cancer predictors were associated with all outcomes. Pain predicted uniquely greater decreases in physical function post-diagnosis. CONCLUSIONS: Depressive symptoms increased and QOL decreased following breast cancer diagnosis compared with pre-cancer levels, particularly in the first year. IMPLICATIONS FOR CANCER SURVIVORS: QOL may remain lower for years after breast cancer diagnosis, although decreases are small.
PURPOSE: Distress and reduced quality of life (QOL) are common among people with cancer. No study has compared these variables after breast cancer diagnosis to pre-cancer diagnosis levels. METHODS: Data on women with breast cancer 50 years of age or older (n = 6949) were analyzed from the Women's Health Initiative (1993-2013). Health-related QOL (physical function, mental health) was measured using Rand-36. Depressive symptoms were measured with the six-item Center for Epidemiologic Studies Depression scale. Assessments occurred before and after the cancer diagnosis. Hierarchical linear modeling compared pre-cancer QOL and depressive symptoms to levels post-diagnosis and tested whether pre-cancer physical activity, stressful life events, sleep disturbance, and pain predicted post-diagnosis outcomes. RESULTS: Compared with pre-cancer levels, depressive symptoms increased (20.0% increase at 0-6 months, 12.9% increase at 6-12 months), while physical function (-3.882 points at 0-6 months, -3.545 at 6-12 months) and mental health decreased (-2.899 points at 0-6 months, -1.672 at 6-12 months) in the first year after diagnosis (all p < .01). Depressive symptoms returned to pre-cancer levels after 10 years, but QOL remained significantly lower. At more than 10 years post-diagnosis, physical function was 2.379 points lower than pre-cancer levels (p < 0.01) while mental health was 1.922 points lower (p < 0.01). All pre-cancer predictors were associated with all outcomes. Pain predicted uniquely greater decreases in physical function post-diagnosis. CONCLUSIONS:Depressive symptoms increased and QOL decreased following breast cancer diagnosis compared with pre-cancer levels, particularly in the first year. IMPLICATIONS FOR CANCER SURVIVORS: QOL may remain lower for years after breast cancer diagnosis, although decreases are small.
Entities:
Keywords:
Breast cancer; Depression; Distress; Health-related quality of life; Neoplasm; Women’s health
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