Journal of Oral Science Research ›› 2024, Vol. 40 ›› Issue (10): 890-894.DOI: 10.13701/j.cnki.kqyxyj.2024.10.008

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Risk Factor Analysis and Risk Model Construction of Postoperative Infection in Patients with Maxillofacial Fractures

LU Xinyue1, PAN Yuetong1, SUN Xinyi1, LV Zhongjin1,2*   

  1. 1. School of Stomatology, Xuzhou Medical University, Xuzhou 221004, China;
    2. Department of Stomatology, The Affiliated Xuzhou Municipal Hospital of Xuzhou Medical University, Xuzhou 221006, China
  • Received:2024-05-09 Online:2024-10-28 Published:2024-10-24

Abstract: Objective: To analyze the risk factors for postoperative infection in patients with maxillofacial fractures and construct a risk prediction model. Methods: From January 2022 to January 2024, 81 patients with oral and maxillofacial fractures who developed infection after surgical treatment at Xuzhou Medical University Affiliated Hospital were selected as the research subjects. Meanwhile, 70 patients with oral and maxillofacial fractures who did not develop infection after surgery at the same hospital during the same period were selected as the control group. Clinical data of patients were retrospectively collected and multiple logistic regression analysis was performed to screen for independent risk factors. A risk prediction model was constructed and its predictive value was evaluated. Results: The study found that operation duration ≥3 h, diabetes, and the number of titanium nails ≥20 were independent risk factors for postoperative infection of maxillofacial fractures (P<0.05). According to the selected independent risk factors, a prediction model for postoperative infection risk of patients with maxillofacial fractures was constructed: Logit (P) =-0.747+operation duration×1.730+diabetes×1.789+number of titanium nails×1.078. Hosmer-Lemeshow good of fit test showed that the fitting accuracy of the model was good (χ2=2.015, P=0.365). The calibration curve showed that the prediction probability was close to the actual probability, indicating that the model had a good calibration degree. The receiver operating characteristic (ROC) curve indicated that the area under the curve (AUC) of the predictive model was 0.728, suggesting that the model possessed moderate discriminative capacity. Decision curve analysis (DCA) revealed that within the horizontal axis range of 0.3-0.8 the predictive model's curve lay above the two extreme curves, suggesting that the model's clinical utility was acceptable. Conclusion: Postoperative infection in patients with maxillofacial fractures is related to the operation duration, diabetes, and the number of titanium nails. The risk prediction model based on it has certain diagnostic value.

Key words: maxillofacial fractures, postoperative infection, risk factors, prediction model, diagnostic value