DoseInterval

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.

Data model

Definition of the DoseInterval element
Field Type Multiplicity Description
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.

Example

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"

Explanations

quantity

The amount of an individual dose (See Quantity).

schedule_frequency

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.

interval

The time interval over which the specified dosage is given. See TimeInterval for information about privacy concerns.