About: http://webisa.webdatacommons.org/290441334

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	We considered covariates such as investigator, treatment ?? investigator interaction, sex, duration of illness, and intracranial volume.
http://www.w3.org/ns/prov#wasQuotedFrom	jamanetwork.com