Data Source and Study Population:
The National Cancer Database (NCDB) is a clinical database for adult and pediatric oncology patients that is sponsored by the American Cancer Society and American College of Surgeons.22,23 Over 1500 centers contribute hospital-level data, capturing approximately 70% of the annual cancer incidence nationally. The NCDB contains information on patient demographics, insurance status, staging, treatment, and patient outcomes. This study was deemed exempt from IRB review due to the de-identified nature of the dataset.
From the NCDB (2004-2015), patients aged 0-25 years diagnosed with sarcoma based on ICD-O-E codes were included in the study. This cohort included all sarcoma histological subtypes as detailed in Appendix A. Patients missing data on insurance status and median household income and educational status, which were used to determine SES, were excluded from this study.