About: http://webisa.webdatacommons.org/29111132

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	Age group is an example of an ordinal categorical variable.When using categorical variables in an investigation, the data can be summarized in the form of frequencies, or counts, of patients in each category.
http://www.w3.org/ns/prov#wasQuotedFrom	nih.gov