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Our objective was to evaluate differences in treatments received, patient experiences of care, and treatment decision\u2010making processes among breast cancer survivors by body size.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We used data from the Share Thoughts on Breast Cancer study. Participants (<jats:italic>n<\/jats:italic>\u2009=\u20091198) completed a survey that included information on demographics, treatments received, quality of care, and decision\u2010making. We used descriptive statistics to evaluate differences in survey response by BMI category, and multivariable\u2010adjusted multinomial and logistic regression to examine associations of BMI with treatments received.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Those with higher BMI were more likely to be older, report fair\/poor health, not have a college\u2010level education, be non\u2010white, not be insured, have an income under $50,000, be unemployed, and report a history of several chronic diseases. Although there were unadjusted associations, after adjustment, women with obesity were not significantly less likely to receive mastectomy [OR 0.79 (0.50, 1.26) and OR 0.66 (0.38, 1.16), for BMI 30\u201335 and 35+ kg\/m<jats:sup>2<\/jats:sup> respectively] or contralateral prophylactic mastectomy [OR 0.92 (0.59, 1.44) and OR 0.80 (0.46, 1.39)] than those without obesity. Similarly, we found no association of BMI with reconstructive surgery [OR 0.97 (0.58, 1.60) and OR 0.58 (0.30, 1.11)] after adjustment. Women with obesity were less likely to report that their breast cancer care was excellent or very good (<jats:italic>p<\/jats:italic>\u2009=\u20090.026).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>We observed no differences in breast cancer treatments received by BMI after adjustment for key covariates in this study sample. Further research is necessary to determine why quality of care may be perceived as lower among women with obesity.<\/jats:p><\/jats:sec>","DOI":"10.1002\/cam4.70628","type":"journal-article","created":{"date-parts":[[2025,2,5]],"date-time":"2025-02-05T05:50:12Z","timestamp":1738734612000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Body Weight and Breast Cancer Treatment Experiences: Results From the Share Thoughts on a Breast Cancer Study"],"prefix":"10.1002","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9038-6001","authenticated-orcid":false,"given":"Sarah H.","family":"Nash","sequence":"first","affiliation":[{"name":"Department of Epidemiology, College of Public Health University of Iowa  Iowa City Iowa USA"},{"name":"Holden Comprehensive Cancer Center University of Iowa  Iowa City Iowa USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elizabeth","family":"Verhage","sequence":"additional","affiliation":[{"name":"Department of Epidemiology, College of Public Health University of Iowa  Iowa City Iowa USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bradley D.","family":"McDowell","sequence":"additional","affiliation":[{"name":"Holden Comprehensive Cancer Center University of Iowa  Iowa City Iowa USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0031-5988","authenticated-orcid":false,"given":"Joan","family":"Neuner","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine Medical College of Wisconsin  Milwaukee Wisconsin USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elizabeth","family":"Chrischilles","sequence":"additional","affiliation":[{"name":"Department of Epidemiology, College of Public Health University of Iowa  Iowa City Iowa USA"},{"name":"Holden Comprehensive Cancer Center University of Iowa  Iowa City Iowa USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ingrid M.","family":"Lizarraga","sequence":"additional","affiliation":[{"name":"Holden Comprehensive Cancer Center University of Iowa  Iowa City Iowa USA"},{"name":"Department of Surgical Oncology, College of Medicine University of Iowa  Iowa City Iowa USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mary","family":"Schroeder","sequence":"additional","affiliation":[{"name":"Division of Health Services Research, College of Pharmacy University of Iowa  Iowa City Iowa USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2025,2,4]]},"reference":[{"key":"e_1_2_11_2_1","volume-title":"The Associations Between Food, Nutrition and Physical Activity and the Risk of Breast Cancer. 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