Slot: isNull
Flag specifying that an item's value is to be set to null. In the interest of creating non-verbose XML instances, one should not use ItemData elements with IsNull set to "Yes" to indicate uncollected data. The better practice is to transmit only collected data. For use cases where data traceability is important, providing ItemData elements with IsNull="Yes" maybe be useful. It is not necessary to provide an ItemData element with IsNull set to "Yes" in cases where the source system would not create a record.
URI: odm:isNull
Applicable Classes
Name | Description | Modifies Slot |
---|---|---|
ItemData | The ItemData element is used for transmission of the clinical data for an ite... | yes |
Properties
- Range: YesOnly
Identifier and Mapping Information
Schema Source
- from schema: http://www.cdisc.org/ns/odm/v2.0
LinkML Source
name: isNull
description: Flag specifying that an item's value is to be set to null. In the interest
of creating non-verbose XML instances, one should not use ItemData elements with
IsNull set to "Yes" to indicate uncollected data. The better practice is to transmit
only collected data. For use cases where data traceability is important, providing
ItemData elements with IsNull="Yes" maybe be useful. It is not necessary to provide
an ItemData element with IsNull set to "Yes" in cases where the source system would
not create a record.
from_schema: http://www.cdisc.org/ns/odm/v2.0
rank: 1000
alias: isNull
domain_of:
- ItemData
range: YesOnly