VariableName VariableLabel Type Role Note Core
STUDYID Study Identifier Char Identifier Unique identifier for a study. Req
DOMAIN Domain Abbreviation Char 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
HOSEQ Sequence Number Num Identifier Sequence Number given to ensure uniqueness of subject records within a domain. May be any valid number. Req
HOGRPID Group ID Char Identifier Used to tie together a block of related records in a single domain for a subject. Perm
HOREFID Reference ID Char Identifier Internal or external healthcare encounter identifier. Perm
HOSPID Sponsor-Defined Identifier Char Identifier Sponsor-defined identifier. It may be pre-printed on the CRF as an explicit line identifier or defined in the sponsor’s operational database. Example: Line number on a Healthcare encounters page. Perm
HOTERM Reported Term for the Healthcare Encounter Char Topic Verbatim or preprinted CRF term for the healthcare encounter. Req
HODECOD Dictionary-Derived Term for the Healthcare Encounter Char Synonym Qualifier Dictionary or sponsor-defined derived text description of HOTERM or the modified topic variable (HOMODIFY). Perm
HOCAT Category for Healthcare Encounter Char Grouping Qualifier Used to define a category of topic-related values. Perm
HOSCAT Subcategory for Healthcare Encounter Char Grouping Qualifier A further categorization of HOCAT values. Perm
HOPRESP Pre-Specified Healthcare Encounter Char Record Qualifier A value of “Y” indicates that this healthcare encounter event was pre-specified on the CRF. Values are null for spontaneously reported events (i.e., those collected as free-text verbatim terms) Perm
HOOCCUR Healthcare Encounter Occurrence Char Record Qualifier Used when the occurrence of specific healthcare encounters is solicited to indicate whether or not an encounter occurred. Values are null for spontaneously reported events. Perm
HOSTAT Completion Status Char Record Qualifier The status indicates that the pre-specified question was not answered. Perm
HOREASND Reason Healthcare Encounter Not Done Char Record Qualifier Describes the reason data for a pre-specified event was not collected. Used in conjunction with HOSTAT when value is NOT DONE. Perm
HODTC Date/Time of Event Collection Char Timing Collection date and time of the healthcare encounter. Perm
HOSTDTC Start Date/Time of Healthcare Encounter Char Timing Start date/time of the healthcare encounter (e.g., date of admission). Exp
HOENDTC End Date/Time of Healthcare Encounter Char Timing End date/time of the healthcare encounter (date of discharge). Perm
HODY Study Day of Event Collection Num Timing Study day of event collection relative to the sponsor-defined RFSTDTC. Perm
HOSTDY Study Day of Start of Healthcare Encounter Num Timing Study day of the start of the healthcare encounter relative to the sponsor-defined RFSTDTC. Perm
HOENDY Study Day of End of Healthcare Encounter Num Timing Study day of the end of the healthcare encounter relative to the sponsor-defined RFSTDTC. Perm
HODUR Duration of Healthcare Encounter Char Timing Collected duration of the healthcare encounter. Used only if collected on the CRF and not derived from the start and end date/times. Example: P1DT2H (for 1 day, 2 hours). Perm
HOSTRTPT Start Relative to Reference Time Point Char Timing Identifies the start of the observation as being before or after the sponsor-defined reference time point defined by variable --STTPT. Perm
HOSTTPT Start Reference Time Point Char Timing Description or date/time in ISO 8601 character format of the sponsor-defined reference point referred to by STRTPT. Examples: “2003-12-15” or “VISIT 1”. Perm
HOENRTPT End Relative to Reference Time Point Char Timing Identifies the end of the event as being before or after the reference time point defined by variable HOENTPT. Perm
HOENTPT End Reference Time Point Char Timing Description or date/time in ISO 8601 character format of the reference point referred to by HOENRTPT. Examples: "2003-12-25" or "VISIT 2". Perm