目的 探讨决策冲突在头颈部恶性肿瘤放化疗患者癌症信息超载(Cancer information overload，CIO）与恐惧疾病进展间的中介作用。 方法 2022年8月至2023年1月，采用便利抽样法选取承德医学院附属医院肿瘤科收治的241例头颈部恶性肿瘤行放化疗患者作为研究对象，采用一般资料调查表、癌症信息超载量表（cancer information overload scale，CIOS）、决策冲突量表(decisional conflict scale，DCS)、恐惧疾病进展量表（fear of progression questionnaire-short form，FoP-Q-SF）进行调查。 结果 头颈部恶性肿瘤放化疗患者的CIOS、DCS及FoP-Q-SF的总得分分别为（19.48±8.43）、（30.82±7.66）、（34.92±13.73）分；Pearson相关性分析结果显示，头颈部恶性肿瘤放化疗患者的CIOS与DCS、FoP-Q-SF呈两两正相关（均P＜0.01）；Bootstrap分析显示，DCS占头颈部恶性肿瘤放化疗患者CIOS和FoP-Q-SF中介效应值的32.19%。 结论 DCS在头颈部恶性肿瘤放化疗患者CIOS与FoP-Q-SF间起到部分中介作用，提示医务人员可以通过制定系统完善的健康宣教策略提高患者癌症信息素养，以缓解患者CIOS和DCS，从而改善患者FoP-Q-SF心境状态。

Objective To explore the mediating role of decisional conflict between cancer information overload (CIO) and fear of disease progression in patients with head and neck cancer undergoing radiotherapy and chemotherapy. Methods From August 2022 to January 2023，a convenience sampling method was used to select 241 patients with head and neck malignant tumors who underwent radiotherapy and chemotherapy from the Oncology Department of Affiliated Hospital of Chengde Medical University as the research subjects. The general data questionnaire，cancer information overload scale (CIOS)，decisional conflict scale (DCS)，and fear of progression questionnaire short form (FoP-Q-SF) were used to conduct the survey. Results The total score of CIOS in patients with head and neck malignant tumors undergoing radiotherapy and chemotherapy is (19.48±8.43) points; the total score of DCS is (30.82±7.66) points; the total score of FoP-Q-SF is (34.92±13.73) points. Pearson correlation analysis showed that there was a pairwise positive correlation between CIOS and DCS，FoP-Q-SF in patients with head and neck malignant tumors undergoing radiotherapy and chemotherapy (all P＜0.01). Bootstrap analysis showed that DCS accounted for 32.19% of the mediating effect values of CIOS and FoP-Q-SF in patients with head and neck malignant tumors undergoing radiotherapy and chemotherapy. Conclusions DCS plays a partial mediating role between CIOS and FoP-Q-SF in patients with head and neck malignant tumors undergoing radiotherapy and chemotherapy，suggesting that medical personnel can improve their cancer information literacy by developing systematic and comprehensive health education strategies to alleviate patients’ CIOS and DCS，thereby improving their FoP-Q-SF mood state.

R473.73

河北省自然科学基金资助项目（H2021406036）