How to map qualitative results of some laboratory tests?

[Wenjie225]

Based on current main concepts that we have, laboratory test can be defined as a type of ''Measurement''. In UM's data, there are some lab tests with qualitative results, such as BACTERIEN_NEGATIEF (bacteria: negative), SLIJM_SLIJM + (+, positive), HEMOLYTISCH_HEMOLYTISCH (hemolytic test: Licht, light), MDRD_MIN (MDRD renal function test: >60 ml/min), etc. The qualitative result values can be: "positive/negative", "high/medium/low", "+, ++, +++" or in other formats. In current aidava-sphn ontology and in SPHN schema, there is only "quantity" and "has qualitative result code" to map the test results.

What can be the qualitative result codes that match the above values? Or what would be a good experience to map the qualitative results of laboratory tests?

If we cannot find optimal qualitative results codes, here are two suggestions:

1. We can retain the concept of "LabResult" with predicates "has quantitative result" / "has qualitative result''. Then we can map the lab results as a quantity or a qualitative value. At the same time, we can define "LabResult'' as a subclass of ''Measurement'', which keeps the main concepts we have by far.
2. Or we can directly create a predicate in "Measurement'' including ''has qualitative result'' to add the qualitative values in a string format.

[KateSerafimova]

To resolve this issue, the following changes will be made:

• Deprecate LabResult and use Measurement instead of LabResult
• Make Measurement equivalent to SNOMED's 363787002 | Observable entity (observable entity) |
• Add Measurement to the domain of sphn:hasLabTest and use it as an alternative of sphn:hasMeasurementMethod (both are types of procedure)
• Add Measurement to the domain of hasQualitativeResult to allow for entering free text