biostudies-literatureMandelblatt JSNCI NIH HHS2609-14https://www.ebi.ac.uk/biostudies/studies/S-EPMC3413274biostudies-literatureUnknown30(21)PURPOSE Physician and patient decision styles may influence breast cancer care for patients ≥ 65 years ("older") because there is uncertainty about chemotherapy benefits in this group. We evaluate associations between decision-making styles and actual treatment. METHODS Data were collected from women treated outside of clinical trials for newly diagnosed stage I to III breast cancer (83% response) from January 2004 through April 2011 in 75 cooperative group sites. Physicians completed a one-time mailed survey (91% response), and clinical data were abstracted from charts. Patient decision style was measured on a five-point scale. Oncologists' preference for prescribing chemotherapy was based on standardized vignettes. Regression and multiple imputation were used to assess associations betJournal of clinical oncology : official journal of the American Society of Clinical OncologyPatient and physician decision styles and breast cancer chemotherapy use in older women: Cancer and Leukemia Group B protocol 369901.PMC3413274R03 CA138077U10 CA084131P30 CA051008CA33601P30CA51008K05 CA096940U10 CA077597U01 CA31946U10 CA031946R01 CA127617U10 CA047577CA47577CA77597K07 CA166342U10 CA033601UO1 CA33601KO5 CA096940U10 CA 84131Taylor KCohen HJMandelblatt JSIsaacs CTallarico MBarry WTLuta GSheppard VBMakgoeng SBFaul LAfalsePatient and physician decision styles and breast cancer chemotherapy use in older women: Cancer and Leukemia Group B protocol 369901.PURPOSE Physician and patient decision styles may influence breast cancer care for patients ≥ 65 years ("older") because there is uncertainty about chemotherapy benefits in this group. We evaluate associations between decision-making styles and actual treatment. METHODS Data were collected from women treated outside of clinical trials for newly diagnosed stage I to III breast cancer (83% response) from January 2004 through April 2011 in 75 cooperative group sites. Physicians completed a one-time mailed survey (91% response), and clinical data were abstracted from charts. Patient decision style was measured on a five-point scale. Oncologists' preference for prescribing chemotherapy was based on standardized vignettes. Regression and multiple imputation were used to assess associations bet2012-01-01T00:00:00Z2012 Jul2025-04-04T14:20:43.073Z2019-03-27T00:56:26ZS-EPMC34132742261498510.1200/JCO.2011.40.290910.1200/jco.2011.40.2909