About: http://webisa.webdatacommons.org/445749118

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Second, one of the variables on which the groups were stratified was the number of self-reported days out of 30 preceding intake with any level of drinking.
http://www.w3.org/ns/prov#wasQuotedFrom	pubmedcentralcanada.ca