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 rstquantity element to represent the individual 30 mg dose, and rstontologyclass element to represent twice a day, and an rstinterval element to represent the 10-day interval.
DoseInterval element
| Field | Type | Multiplicity | Description |
|---|---|---|---|
| quantity | rstquantity |
1..1 | Amount administered in one dose. REQUIRED. |
| schedule_frequency | rstontologyclass |
1..1 | how often doses are administered per day (or other indicated duration). REQUIRED. |
| interval | rsttimeinterval |
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"The amount of an individual dose (See rstquantity).
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.
The time interval over which the specified dosage is given. See rsttimeinterval for information about privacy concerns.