VariableName VariableLabel Type Controlled Terms, Codelist or Format Role CDISC Notes Core
STUDYID Study Identifier Char   Identifier Unique identifier for a study. Req
DOMAIN Domain Abbreviation Char DX Identifier Two-character abbreviation for the domain. Req
USUBJID Unique Subject Identifier Char   Identifier Identifier used to uniquely identify a subject across all studies for all applications or submissions involving the product. Req
SPDEVID Sponsor Device Identifier Char   Identifier Sponsor-defined identifier for the device.It must be unique for each tracked unit of the device under study, and can be at whatever level of granularity the device should be identified (e.g., model or serial number, or combination of identifiers). Req
DXSEQ Sequence Number Num   Identifier Sequence Number given to ensure uniqueness of device records within subject records within a domain.May be any valid number. It should be unique within every subject/device combination. Req
DXGRPID Group ID Char   Identifier Identifier that ties together a block of related records in a single domain for a subject.For example, if a device is inserted that delivers radiation, DXGRPID could be used to tie the records for the device and the radiation together for each course of therapy. Perm
DXSPID Sponsor-Defined Identifier Char   Identifier Sponsor-defined reference number.Examples: a number pre-printed on the CRF as an explicit line identifier or record identifier defined in the sponsor's operational database. Perm
DXTRT Name of Device Exposure or Output Char   Topic Name of the device or the exposure outputs that are delivered or administered via the device. This should match the definitions as described in the trial summary domain and/or the protocol.Example: "coronary stent", "extracorporeal shock wave treatment", "hyaluronic acid". Req
DXCAT Category for Device Exposure Char * Grouping Qualifier Used to define a category of device exposures.For example, for a subject who had radiation delivered through an implanted catheter, DXCAT could be used to group the radiation records versus the catheter records. Perm
DXSCAT Subcategory for Device Exposure Char * Grouping Qualifier A further categorization of device exposures.If DXCAT captures the radiation versus catheter records (see DXCAT), then DXSCAT might capture the type of catheter if more than one was used. Perm
DXDOSE Exposure per Administration Num   Record Qualifier Amount of DXTRT administered/delivered per administration.Dose if captured as a numeric value. Dose should only appear once in DXDOSE, DXDOSTXT, or DXDOSTOT. Perm
DXDOSTXT Device Exposure Description Char   Record Qualifier Exposure amount or a range of exposure information collected in text form.Units may be stored in DXDOSU. Example: 200-400, 15-20. Dose should only appear once in DXDOSE, DXDOSTXT, or DXDOSTOT. Perm
DXDOSU Device Exposure Units Char (UNIT) Variable Qualifier Units for DXDOSE, DXDOSTXT, and DXDOSTOT.Examples: "pulses", "ml". Perm
DXDOSFRQ Device Exposure Frequency per Interval Char (FREQ) Variable Qualifier Exposure frequency per interval.Usually expressed as the number of repeated administrations of DXDOSE within a specific time period. Examples: "CONTINUOUS", "PRN", "Q2M" (every 2 months). Perm
DXDOSTOT Total Daily Device Exposure Num   Record Qualifier Total daily exposure of DXTRT using the units in DXDOSU.Total exposure over a period other than day could be recorded in a separate Supplemental Qualifier variable. Perm
DXDOSRGM Intended Device Exposure Regimen Char   Variable Qualifier Text description of the (intended) schedule or regimen for the Intervention.Examples: "TWO WEEKS ON, TWO WEEKS OFF". Perm
DXROUTE Route of Administration Char (ROUTE) Variable Qualifier Route of administration for DXTRT.Examples: "EXTRACORPOREAL", "INTRA-ARTICULAR, HEMODIALYSIS". Perm
DXLOC Location of Device Exposure Char   Record Qualifier Anatomic location of exposure.Examples: "Knee", "Eye". Perm
DXLAT Laterality of Device Exposure Char   Variable Qualifier Qualifier for anatomical location further detailing laterality.Examples: "RIGHT", "LEFT", "BILATERAL". Perm
DXADJ Reason for Exposure Adjustment Char   Record Qualifier Describes reason why the exposure was adjusted from protocol-specified or expected exposure levels.Example: "PAIN". Perm
DXSTDTC Start Date/Time of Device Exposure Char ISO 8601 Timing Start date and time of exposure.Defined by the sponsor. Exp
DXENDTC End Date/Time of Device Exposure Char ISO 8601 Timing End date and time of exposure.Defined by the sponsor. Perm
DXSTDY Study Day of Start of Device Exposure Num   Timing Study day of start of exposure relative to the sponsor-defined RFSTDTC. Perm
DXENDY Study Day of End of Device Exposure Num   Timing Study day of end of exposure relative to the sponsor-defined RFSTDTC. Perm
DXDUR Duration of Device Exposure Char ISO 8601 Timing Collected duration for a treatment episode.Used only if collected on the CRF and not derived from start and end date/times. Perm