Reference Sets Practical Guide

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Association Ordered reference set
ApproachDescriptionExample UsesReference Set
Sequential ordering

Showing descriptions associated with high priority concepts before those associated with a lower priority.

Annotating each subset member with an integer, which specify the consecutive order of the members. Two subset members do not have the same number assigned to them.

Displaying descriptions sequentially according to their specified order. Ordered reference set

Prioritization		Annotating each subset member with a an integer, which specify a priority order. Two or more subset members may have the same number assigned to them.

 

Showing concepts with a high priority before their siblings using hierarchical display results.

  • Display search results in priority order
    • Results with same rank ordered by shortest or closest match
  • Displaying a rank indicator in search result list

Ordered reference set

Initially listing concepts and associated descriptions with a priority above a specified threshold and requiring additional steps to access those assigned a lower priority.

  • Initial search is conducted on components with highest priority
  • Allow search to be extended to lower priorities
    • If no high priority matches
    • If user requests more matches

Sequential Ordering

Displaying items for data entry in a rational way typically involves organizing the values in a selection list in an order that is logical for the end users. As illustrated in the figure below, an ordered reference set can be used to specify the order in which SNOMED CT components should be displayed.

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