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Epi Info™ User Guide


Classic Analysis




How to Manage Variables: Use IF Statements with Permanent or Global Variables

  • If the condition of an IF statement depends on global or permanent variables, the value is computed immediately and only the true or false branch, as appropriate, is followed.
  • If the condition of an IF statement depends on a field variable, neither branch is followed. However, computations within the branches are saved for execution as appropriate on each record. In the second case, non-computational commands (e.g., READ, SELECT, SORT, HEADER, and ROUTEOUT) are never executed.
 

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  • Page last updated: June 6, 2012
  • Page created: June 6, 2012
  • Content source: Epi Info™
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