This HTML5 document contains 4 embedded RDF statements represented using HTML+Microdata notation.

The embedded RDF content will be recognized by any processor of HTML5 Microdata.

PrefixNamespace IRI
isaphttp://webisa.webdatacommons.org/prov/
isahttp://webisa.webdatacommons.org/
rdfhttp://www.w3.org/1999/02/22-rdf-syntax-ns#
provhttp://www.w3.org/ns/prov#
n4pubmedcentralcanada.
xsdhhttp://www.w3.org/2001/XMLSchema#
Subject Item
isa:350535863
rdf:type
prov:Entity
prov:value
Details of echocardiography, including quality control, have previously been reported. 20 Ejection fraction was determined semi-quantitatively using visual assessment and a modified Quinones formula.21, 22 Left ventricular systolic dysfunction was defined as an ejection fraction less than 50%. 23, 24CovariatesCovariate information was obtained at the time of the third ARIC visit, with the two exce
prov:wasQuotedFrom
n4:ca
Subject Item
isap:271687044
prov:wasDerivedFrom
isa:350535863