Objective: To construct and internally validate a predictive model for postoperative kinesiophobia in elderly patients with hip fractures. Methods: Convenience sampling was conducted from October 2022 to August 2023, and 367 elderly patients with hip fractures who met the standards from three tertiary hospitals in Sichuan Province were selected as the study subjects. They were randomly divided into a training group (257 cases) and a validation group (110 cases) in a 7∶3 ratio. The tampa scale of kinesiophobia was used to identify patients with kinesiophobia, logistic regression analysis is used to identify influencing factors and variable screening, and R software is used to establish a risk prediction model for kinesiophobia. Results: In the training group, logistic regression analysis showed that frailty, pain, self-efficacy, and social support were independent influencing factors for the occurrence of postoperative kinesiophobia in elderly patients with hip fractures; The areas under the ROC curves of the training group and the validation group were 0.888 and 0.914, respectively. The optimal cutoff value determined by the Youden index was 0.760, and the correction curve with P=0.187 validated the correction effect of the model. The decision curve indicates that clinical benefits are greater when the threshold probability is between 5% and 98%. Conclusion: The postoperative kinesiophobia risk prediction model for elderly hip fracture patients based on frailty, pain, self-efficacy, and social support has good predictive ability, which helps to determine the risk of kinesiophobia and is helpful for screening and prevention of kinesiophobia. Patients with a kinesiophobia risk score greater than 0.760 should undergo regular monitoring of kinesiophobia and receive personalized preventive interventions. |