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General The following are general conventions for variable population:

Metadataspec
NumTabulation Variable UseImplementation
1Text Data Casing
  • Variables subject to controlled terminology will be populated with the exact value for the controlled term, including term casing.
  • Otherwise, text data will be represented in upper case (e.g., NEGATIVE).
2Grouping Variables

3

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5

6

7







Assumptions in this section are appliable to Interventions, Events, and Findings class domains and will be used with domain-specific assumptions as appropriate.

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