乳腺癌治疗后体重增加很常见，本研究旨在确定澳大利亚女性乳腺癌治疗后体重增加的相关因素。我们在2017年11月至2018年1月间进行了一项横断面在线调查，符合条件的参与者为自认患有乳腺癌或导管内乳癌的澳大利亚女性。我们创建了逐步线性回归和逐步 logistic 回归模型，分别评估绝对体重增加和临床显著（≥5%）体重增加的预测因素。我们分析了276位女性的数据，大多数是白种人，92%被诊断为0-III期乳腺癌。绝对体重增加与潮热、在诊断时进入更年期转换期、体力活动量减少（相对于诊断时）、看电视或使用电脑时的较低饮食自我效能、焦虑或紧张时的自我效能较高有关（F-统计值=3.26、R2-adjusted=0.16、p<.001）。临床显著体重增加与使用他莫昔芬（OR 2.7）、体力活动量减少（相对于诊断时）（OR 3.1）和看电视或使用电脑时的较低饮食自我效能（OR 0.82）有关（卡方统计值64.94，df=16，p<.001）。体重增加与化疗、放疗、芳香化酶抑制剂的使用、切除淋巴节点数量和诊断时的身体质量指数无关。预防乳腺癌治疗后的体重增加的干预措施，特别是维持体力活动，应针对使用他莫昔芬的女性。应该研究注意力饮食等饮食自我效能在乳腺癌治疗后体重管理中的作用。 版权所有©2023 Elsevier Ltd.，由作者持有。

Weight gain after breast cancer is common. The aim of this study was to determine factors associated with weight gain after breast cancer in Australian women.A cross-sectional online survey was conducted between November 2017 and January 2018. Women living in Australia who self-identified as having breast cancer or ductal carcinoma in-situ were eligible. We created stepwise linear and logistic regression models to evaluate predictors for absolute and clinically significant (≥5%) weight gain respectively.Data from 276 women were analysed. Most were Caucasian and 92% had been diagnosed with Stage 0-III breast cancer. Absolute weight gain was associated with hot flushes, being in the menopausal transition at diagnosis, being less physically active than at diagnosis, lower eating self-efficacy when watching television or using a computer, and higher self-efficacy when anxious or nervous (F-ratio = 3.26, R2-adjusted = 0.16, p < .001). Clinically significant weight gain was associated with tamoxifen use (OR 2.7), being less physically active than at diagnosis (OR 3.1), and lower eating self-efficacy when watching television or using a computer (OR 0.82) (Chi-square 64.94, df = 16, p < .001). Weight gain was not associated with chemotherapy, radiotherapy, aromatase inhibitor use, number of lymph nodes removed, or body mass index at diagnosis.Interventions to prevent weight gain after breast cancer, particularly aiming to maintain physical activity, should be targeted at women receiving tamoxifen. The role of eating self-efficacy, especially attentive eating, in managing weight after breast cancer should be explored.Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.