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The PPI Hierarchical crosswalks include only standard concepts. A PPI standard concept value depends on the existence of an equivalent mapping either to the SNOMED or LOINC. In turn, a standard SNOMED/LOINC equivalent, if present, takes place of a non-standard PPI concept in the Internal PPI Hierarchy and adopts all its ancestors and descendants. | The PPI Hierarchical crosswalks include only standard concepts. A PPI standard concept value depends on the existence of an equivalent mapping either to the SNOMED or LOINC. In turn, a standard SNOMED/LOINC equivalent, if present, takes place of a non-standard PPI concept in the Internal PPI Hierarchy and adopts all its ancestors and descendants. | ||
+ | |||
+ | ===== Mapping logic ===== | ||
+ | **1) Mapping of PPI Questions.** | ||
+ | Note, that for the answers-containing Topics the same logic was used. | ||
+ | {{ :documentation:vocabulary:1.png?400 |}} | ||
+ | |||
+ | **2) Mapping of Answers** | ||
+ | {{ :documentation:vocabulary:2.png?800 |}} | ||
+ | |||
+ | **3) Mapping of Measurements** | ||
+ | {{ :documentation:vocabulary:3.png?400 |}} |