BPMN Methodology
Discriminating (routing): selecting an option out of a collection of possibilities
Conditional branching
Filtering: Removing elements of a certain form from a collection of items
Observation-Assessment-Finding (OAF) Pattern (R. Lario)
Meant to communicate that the task of making an Observation(s) was to be performed by the clinician and a value recorded. Further, a clinical rule is applied to the observation and respective values to be assessed asserting a new clinical Finding(s). These findings, in tandem with the implied observation(s), can be aggregated into a compound observation. Where this compound observation is then Assessed using a rule or clinical algorithm creating yet another new finding. Based upon this new finding, the CPG Branched accordingly progressing to the next procedure of either making a new observation or performing an Intervention. This pattern continues to repeat: Observations that are Assessed resulting in Findings followed by a respective Branch inflow into either a subsequent Intervention or Observation (Figure 2. Observation Assessment Finding (OAF) Pattern).
Ways of representing data:
Stand alone value with units
Relative to a reference value or range (above normal; low-normal-high)
Z-score (incorporating mean and SD)
Multiple of mean (MOM)
Multiple of upper limit of normal (ULN)
Classification of Data Items
(1) simple vs complex (structure)
(2) constant vs variable/changing
(3) predictable vs unpredictable
(4) situational
Query: Does the person have a history of heart disease?
Simple response: Yes or No.
Complex data structure: date of occurrence, anatomic distribution, severity
Date of birth is constant.
Age is constantly changing at a rate of 1 per year.
Blood pressure changes but not in a constant manner.
Predictability: if a patient is normal, then the measure should be within a defined range.