About: http://webisa.webdatacommons.org/3335761

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	Outcomes are observed at the system level rather than the individual level, and the validity of study results may be challenged on a variety of dimensions, particularly small sample sizes and measurement error.
http://www.w3.org/ns/prov#wasQuotedFrom	projectcork.org