Exploring the Influence of Surgical Site Infection on Hospitalization Expenses of Orthopedic Patients Based on Quantile Regression Model
Objectives This study aims to explore the influencing factors of hospital expenses for orthopedic patients after surgery and provide an evidence-based basis for preventing surgical site infections and reducing patients'economic burden.Methods A case-control study was conducted to collect information on 25,452 patients undergoing orthopedic surgery from January 1,2019 to December 31,2022.The patients were divided into an SSI group and a control group according to whether there was surgical site infection.The length of stay and hospital costs of the patients in the two groups were compared,and the quantile regression model was established to explore the influencing factors of the hospitalization costs of orthopaedic surgery.Results The length of hospitalization in SSI group was 17 days longer than that in control group(Z=9.301,P＜0.001).The total hospitalization cost was 36 333.15 yuan higher(Z=4.312,P＜0.001),among which the cost of disposable medical materials for surgery,other expenses,and drug expenses increased the most.Age,chronic disease status,payment method,SSI and surgical site were important influencing factors of hospitalization expenses.At medium and low medical expense levels,advanced age,diabetes and hypertension,out-of-pocket payment,and spine and joint locations had a significant impact on the hospitalization expenses of surgical patients.At the medium-high level of medical expenditure,SSI had significant influence on the hospitalization cost of surgical patients(P50,t=2.069,P=0.039;P75,t=22.550,P＜0.001;P95,t=3.694,P＜0.001).Conclusions Each influencing factor has different degrees of risk for increasing hospitalization costs at different subsites.SSI is the main risk factor,and targeted prevention and control measures should be taken to reduce the risk of infection and help reduce the hospitalization costs of patients.
OrthopedicSurgical site infectionQuantile regressionInpatient costs
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