Extension 
url 
value[x] Documentation for this formatThis is the set of resources that conform to both Uncertainty (http://hl7.org/fhir/StructureDefinition/iso21090-uncertainty) and Uncertainty (http://hl7.org/fhir/StructureDefinition/iso21090-uncertainty).
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension | 0..1 | Standard Deviation (same units as the quantity) | ||
| url | 1..1 | uri | identifies the meaning of the extension | |
| value[x] | 1..1 | decimal | Value of extension | |
| Documentation for this format | ||||