Metrics

The result field captures the diagnostic process output. Three sibling fields describe the classifier's behaviour for this case: performanceIndicators, clinicalIndicators, and analysisDuration.

• result.id: UUID for this specific result row (distinct from the top-level id, which identifies the encrypted DiagnosticReport).

performanceIndicators

A FHIR Observation that shows performance metrics such as sensitivity, specificity, and entropy:

• code.coding: An array containing the codes that describe the metric name (e.g. "sensitivity", "specificity", "entropy").
• valueQuantity.value: The numeric value of the metric.
• valueQuantity.unit: Usually "%" or other relevant units.
• entropy (component code "entropy"): a measure of how confident the AI is in its own response. Entropy is computed over the probability distribution of the diagnostic hypotheses; lower entropy means higher confidence, and higher entropy means lower confidence. Triage flows often use entropy as an uncertainty gate.

"performanceIndicators": {
  "resourceType": "Observation",
  "component": [
    {
      "code": {
        "coding": [
          {
            "code": "sensitivity",
            "display": "Sensitivity"
          }
        ]
      },
      "valueQuantity": {
        "value": 91.16,
        "unit": "%"
      }
    },
    ...
  ]
}

clinicalIndicators

Another FHIR Observation describing clinical aspects such as the probability of having the condition or malignancy suspicion. Each component focuses on a specific clinical clue, with the value carried in valueQuantity.value (percentage from 0 to 100):

• hasCondition: Likelihood that a condition is present.
• malignancy: Likelihood that the condition is malignant.
• urgentReferral: probability that the patient should be seen by a doctor within the next 48 hours. Higher values indicate a stronger recommendation to bring the patient forward into urgent care.
• highPriorityReferral: probability that the patient should be seen by a doctor within the next 15 days. It complements urgentReferral by capturing cases that are not 48-hour-urgent but still warrant a fast-tracked appointment ahead of the routine queue.
• pigmentedLesion: Likelihood that the lesion is pigmented.
• adjustedMalignancy: In the FHIR view, the adjustedMalignancy component's valueQuantity.value is HARD-CODED null for v3 anonymous reports, even when the raw view (result.preliminaryFindings.adjustedMalignancy) returns a number. Treat it as always null in FHIR responses.

"clinicalIndicators": {
  "resourceType": "Observation",
  "component": [
    {
      "code": {
        "coding": [
          {
            "code": "hasCondition",
            "display": "Has condition"
          }
        ]
      },
      "valueQuantity": {
        "value": 100.0,
        "unit": "%"
      }
    },
    ...
  ]
}

analysisDuration

• analysisDuration: Seconds the AI engine spent analysing the images (floating-point). null if the diagnostic engine did not record a duration.