Abstract: Objective: To analyze the mediating effect of self-efficacy between fear of recurrence and posttraumatic growth (PTG) in breast cancer patients after surgery. Methods: A total of 196 postoperative patients with breast cancer admitted to our hospital were collected, using General Self-Efficacy Scale(GSES), Fear of Progression Questionnaire-Short Form(FoP-Q-SF) and Posttraumatic Growth Inventory(PTGI) from January 2019 to January 2024. The mediating effect of self-efficacy between fear of recurrence and PTG in breast cancer patients after surgery was analyzed by SPSS Process Model 4 and bootstrap analysis. Results: Among 196 patients with breast cancer after surgery, the GSES score was (21.74±5.55) points, the FoP-Q-SF score was (25.69 ± 6.12) points, and the PTGI score was (59.93 ± 10.29) points. Fear of recurrence was negatively correlated with self-efficacy (r=-0.894) and negatively correlated with PTG (r=-0.814), while self-efficacy was positively correlated with PTG (r=0.830) (all P<0.05). Self-efficacy plays a partial mediating role between fear of recurrence and PTG in postoperative patients with breast cancer, with a mediating effect value was -0.764, accounting for 55.84% of the total effect. Conclusion: The fear of recurrence in breast cancer patients after surgery can directly predict PTG, and can also indirectly predict PTG through self-efficacy.

Key words: Self efficacy, Breast cancer, Fear of recurrence, Posttraumatic growth, Mediating effect

摘要： 目的：分析自我效能在乳腺癌术后患者复发恐惧与创伤后成长（Posttraumatic Growth，PTG）间的中介效应。方法：选择 2019 年 1 月至 2024 年 1 月收治的 196 例乳腺癌术后患者，使用一般自我效能感量表（General Self-Efficacy Scale，GSES）、癌症患者恐惧疾病进展简化量表（Fear of Progression Questionnaire-Short Form，FoP - Q - SF）、创伤后成长量表（Posttraumatic Growth Inventory，PTGI）进行调查，通过 PROCESS 宏程序的模型 4 和 Bootstrap 法分析乳腺癌术后患者的自我效能在复发恐惧与创伤后成 长间的中介效应作用路径。结果：196 例乳腺癌术后患者的 GSES 评分为（21.74±5.55）分，FoP-Q-SF 评分为（25.69±6.12）分，PTGI 评分为（59.93±10.29）分。复发恐惧与自我效能、创伤后成长呈负相关（r=-0.894、-0.814，P<0.05），自我效能与创伤后成长呈正相 关（r=0.830，P<0.05）。自我效能在乳腺癌术后患者复发恐惧与创伤后成长之间起部分中介效应，中介效应值为-0.764，占总效应的 55.84%。结论：乳腺癌术后患者复发恐惧既可直接预测创伤后成长，又可以通过自我效能对创伤后成长起间接预测作用。

关键词: 自我效能, 乳腺癌, 复发恐惧, 创伤后成长, 中介效应