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has_finding
Arguments
A has_finding relationship associates an investigation with a condition or a result.
Entities do not have to have relationships
- Investigations are not required to take part in has_finding relationships.
- An investigation may have no finding or the finding may not yet be reported.
- For example, a letter might state that "FBC, LFT and U&E were requested", but no mention ever be made of the results.
Inferring relations with clinical knowledge
A has_finding relationship may be created based on clinical knowledge:
- For example,
- "FBC was requested, and showed severe anaemia."
- We can infer that "anaemia" and "FBC" have a has_finding relationship without any specialist knowledge.
- The has_finding relationship will be annotated.
- For example,
- "FBC, U&E and LFTs were requested. She was severely anaemic."
- With background knowledge, we know that the finding of "FBC" was "anaemic".
- The has_finding relationship will be annotated.
has_finding and multiple Conditions and Results
An investigation may show several conditions and /or results. One has_finding relation will be created for each condition and result.
- For example,
- "FBC showed thrombocytopaenia and neutropaenia"
- A has_finding relationship will be created associating "FBC" with "thrombocytopaenia"
- A second has_finding relationship will be created associating "FBC" with "neutropaenia"
- For example,
- "platelet count of 20 showed severe thrombocytopaenia"
- A has_finding relationship will be created associating "platelet count" with the result "20".
- A second has_finding relationship will be created associating "platelet count" with "thrombocytopaenia"
Examinations and has_finding
Examinations, as investigations, often have lists of conditions that are related to the examination by has_finding relationships.
- For example
- "On abdominal examination she had a scar consistent with the surgery, bruising over the abdominal wall. She had pitting oedema of both limbs."
- The "examination" investigation is related to three conditions, by three has_finding relationships.