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Laboratory Panels &Tests Discussions. (a.k.a. Observation Groups verses Atomic Observations). Option 6 – Compound & Indivis . Statements. Specialise Entry into 2 new reference model classes: Compound Entry
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Laboratory Panels &Tests Discussions (a.k.a. Observation Groups verses Atomic Observations)
Option 6 – Compound & Indivis. Statements • Specialise Entry into 2 new reference model classes: • Compound Entry • Used for panels, and may contain data elements, compound statements or atomic statements; Contains shared context. • Indivisible Entry • Used for individual tests, and represent indivisible unit of information about the patient; All context is self-contained or derivable. • Pros • Consistent query paths • Identifies indivisible units of information • Allows arbitrary levels of nesting • Allows context derivation rules to be applied • Cons / Implications • Requires reference model to be changed • Requires the implementation to ensure atomic statements are complete, and independently queryable
Option 6 – Compound & Indivis. Statements Complete Blood Count COMPOUND ENTRY Information Subjct: 7549 ELEMENT: Date: 27th June 2013 ELEMENT: Panel Interpretation: … ELEMENT: INDIVISIBLE ENTRY Hematocrit Result Information Subj:** 7549 ELEMENT: I think this example mixes in elements of the physical model and the logical model. I don’t think there is a need to create logical models like this. Date**: 27th June 2013 ELEMENT: Test Name: |Hematocrit| ELEMENT: Result Value: 42% ELEMENT: Interpretation: |Normal| ELEMENT: INDIVISIBLE ENTRY Hemoglobin Result ELEMENT: Information Subj**: 7549 ELEMENT: Date**: 27th June 2013 Test Name:|Hemoglobin| ELEMENT: ELEMENT: Result Value: 14.2 g/dL **: Derived Interpretation: |Normal| ELEMENT:
The Reference Model should allow both of the next two styles of modeling
Another example of iso-semantic models Complete Blood Count COMPOUND ENTRY Information Subjct: 7549 ELEMENT: Date: 27th June 2013 ELEMENT: Panel Interpretation: … ELEMENT: INDIVISIBLE ENTRY Hematocrit Result ELEMENT: Test Name: |Hematocrit| ELEMENT: Result Value: 42% ELEMENT: Interpretation: |Normal| INDIVISIBLE ENTRY Hemoglobin Result Test Name:|Hemoglobin| ELEMENT: ELEMENT: Result Value: 14.2 g/dL Interpretation: |Normal| ELEMENT:
Another example of iso-semantic models Transfusion Reaction COMPOUND ENTRY Panel Interpretation: … ELEMENT: INDIVISIBLE ENTRY Patient ABO&Rh Type Information Subj: 7549 Modifier: Date: 27th June 2013 ELEMENT: Test Name: [ABO&Rh] ELEMENT: Result Value: A Neg ELEMENT: Interpretation: |Normal| ELEMENT: INDIVISIBLE ENTRY Unit ABO&Rh Type Modifier: Information Subj: Unit 1 ELEMENT: Date: 27th June 2013 Test Name:[ABO&Rh] ELEMENT: ELEMENT: Result Value: A Pos Interpretation: |Normal| ELEMENT:
Modeling Guideline • If the contextual element applies to everything in the panel, place the element at the panel level • If the contextual element applies to only some items in the panel, place the contextual element in each member of the panel to which it applies