The  content by which an  is evaluated or a query is executed.

Notes

• Two distinct types of substrate are directly relevant to use of :
  • The substrate for an  that generates the membership of a  or .
  • The substrate for a clinical analytics query, consisting of a collection of records either coded in or mapped to .

Examples

• Substrates for subset generation include:
  •  A particular version of a specified 
  • Members of a preexisting .
    
• Substrates for analytics include:
  •  encoded  from a particular institution or department.
  • A disease registry database containing or mapped to .
    

Related Links

• Expression Constraint Language - Specification and Guide

• Analytics with SNOMED CT
  • 3.3 Substrates for Analytics
• Decision Support with SNOMED CT
  • 3.3. Substrate