About: http://webisa.webdatacommons.org/291339035

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	A study that compares one group given acupuncture and another group given pills, exercise, massage, or some other sort of therapy is not a properly controlled study because such a design cannot measure the placebo effect.
http://www.w3.org/ns/prov#wasQuotedFrom	skepdic.com