This element represents a block of time in which the dosage of a medication was constant. For example, to represent a period of 30 mg twice a day for an interval of 10 days, we would use a Quantity element to represent the individual 30 mg dose, and OntologyClass element to represent twice a day, and an rstinterval element to represent the 10-day interval.
|quantity||Quantity||1..1||Amount administered in one dose. REQUIRED.|
|schedule_frequency||OntologyClass||1..1||how often doses are administered per day (or other indicated duration). REQUIRED.|
|interval||TimeInterval||1..1||The specific interval over which the dosage was administered in the indicated quantity. REQUIRED.|
The following message represents a dose interval from March 15, 2020 to March 25, 2020, in which a constant dose of 30 mg was given twice a day.
doseInterval: quantity: unit: id: "UO:0000022" label: "milligram" value: 30.0 scheduleFrequency: id: "NCIT:C64496" label: "Twice Daily" interval: start: "2020-03-15T13:00:00Z" end: "2020-03-25T09:00:00Z"
This element specifies the number of instances within a specific time period. It is intended to have the same meaning as the NCIT Schedule Frequency class.