About: http://webisa.webdatacommons.org/378152828

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	One study was a cluster randomised randomised controlled trial (by hospital), another study was an interrupted time series and the rest were before-after studies with no contemporaneous control group.
http://www.w3.org/ns/prov#wasQuotedFrom	york.ac.uk