Relationship between surgical compliance and survival outcome in patients with Ewing sarcoma.

Abstract

Background: The impact of surgical compliance on survival outcomes in patients with Ewing sarcoma (ES) is unclear, so this study was performed to explore the association between them.

Methods: We used the SEER*Stat software (version 8.3.6.1) to extract information on ES patients from the SEER database. Patients were divided into two groups based on their adherence to surgical recommendations: the surgical compliance group and the surgical noncompliance group. Categorical variables were expressed as percentages. Multivariate logistic regression and Chi-square test were used to explore variables related to surgical compliance. Univariate Cox regression analysis was used to initially select potential prognostic factors, and then the factors selected in the univariate Cox regression analysis were further analyzed in a multivariate Cox proportional risk model to ultimately determine the risk prognostic factors significantly related to the survival of patients with ES.

Results: Multiple logistic regression analysis suggested that adults (OR = 0.373, 95% confidence interval (CI): 0.164-0.849), Grade IV (OR = 0.373, 95% CI: 0.164-0.849), and unmarried patients (OR = 0.568, 95% CI: 0.339-0.954) were more inclined to accept surgery recommendations, while patients from 2001 to 2010 were less compliant with surgery. Multifactorial Cox regression analysis suggested that surgical compliance was an independent prognostic factor for patients with ES. Through the Kaplan-Meier survival curves, we could clearly observe that the overall survival was higher in the surgical compliance group than in the surgical noncompliance group. Furthermore, subgroup analysis also reached similar conclusions.

Conclusion: In this study, we found that surgical compliance was an independent predictor of patient prognosis. Furthermore, we found that age, tumor grade, year of diagnosis, and marital status may be related to surgical compliance.