<http://webisa.webdatacommons.org/prov/476811072>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/100973499> .
<http://webisa.webdatacommons.org/100973499>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<cancer.gov> .
<http://webisa.webdatacommons.org/100973499>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/100973499>	<http://www.w3.org/ns/prov#value>	"MAIN OUTCOME MEASURES: The rate of surgical intervention was compared across varying patient characteristics, including age, race, comorbidity score, sex, tumor stage, and socioeconomic region." .