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
VSSEQ Sequence Number Num Identifier Sequence number given to ensure uniqueness of subject records within a domain. May be any valid number. Req
VSGRPID Group ID Char Identifier Used to tie together a block of related records in a single domain for a subject. Perm
VSSPID Sponsor-Defined Identifier Char Identifier Sponsor-defined reference number. Perhaps pre-printed on the CRF as an explicit line identifier or defined in the sponsor's operational database. Perm
VSTESTCD Vital Signs Test Short Name Char Topic Short name of the measurement, test, or examination described in VSTEST. It can be used as a column name when converting a dataset from a vertical to a horizontal format. The value in VSTESTCD cannot be longer than 8 characters, nor can it start with a number (e.g., "1TEST" is not valid). VSTESTCD cannot contain characters other than letters, numbers, or underscores. Examples: "SYSBP", "DIABP", "BMI". Req
VSTEST Vital Signs Test Name Char Synonym Qualifier Verbatim name of the test or examination used to obtain the measurement or finding. The value in VSTEST cannot be longer than 40 characters. Examples: "Systolic Blood Pressure", "Diastolic Blood Pressure", "Body Mass Index". Req
VSCAT Category for Vital Signs Char Grouping Qualifier Used to define a category of related records. Perm
VSSCAT Subcategory for Vital Signs Char Grouping Qualifier A further categorization of a measurement or examination. Perm
VSPOS Vital Signs Position of Subject Char Record Qualifier Position of the subject during a measurement or examination. Examples: "SUPINE", "STANDING", "SITTING". Perm
VSORRES Result or Finding in Original Units Char Result Qualifier Result of the vital signs measurement as originally received or collected. Exp
VSORRESU Original Units Char Variable Qualifier Original units in which the data were collected. The unit for VSORRES. Examples: "in", "LB", "beats/min". Exp
VSSTRESC Character Result/Finding in Std Format Char Result Qualifier Contains the result value for all findings, copied or derived from VSORRES in a standard format or standard units. VSSTRESC should store all results or findings in character format; if results are numeric, they should also be stored in numeric format in VSSTRESN. For example, if a test has results "NONE", "NEG", and "NEGATIVE" in VSORRES, and these results effectively have the same meaning, they could be represented in standard format in VSSTRESC as "NEGATIVE". Exp
VSSTRESN Numeric Result/Finding in Standard Units Num Result Qualifier Used for continuous or numeric results or findings in standard format; copied in numeric format from VSSTRESC. VSSTRESN should store all numeric test results or findings. Exp
VSSTRESU Standard Units Char Variable Qualifier Standardized unit used for VSSTRESC and VSSTRESN. Exp
VSSTAT Completion Status Char Record Qualifier Used to indicate that a vital sign measurement was not done. Should be null if a result exists in VSORRES. Perm
VSREASND Reason Not Performed Char Record Qualifier Describes why a measurement or test was not performed. Examples: "BROKEN EQUIPMENT" or "SUBJECT REFUSED". Used in conjunction with VSSTAT when value is "NOT DONE". Perm
VSLOC Location of Vital Signs Measurement Char Record Qualifier Location relevant to the collection of Vital Signs measurement. Example: "ARM" for blood pressure. Perm
VSLAT Laterality Char Result Qualifier Qualifier for anatomical location or specimen further detailing laterality. Examples: "RIGHT", "LEFT", "BILATERAL". Perm
VSLOBXFL Last Observation Before Exposure Flag Char Record Qualifier Operationally-derived indicator used to identify the last non-missing value prior to RFXSTDTC. Should be "Y" or null. Exp
VSBLFL Baseline Flag Char Record Qualifier Indicator used to identify a baseline value. Should be "Y" or null. Note that VSBLFL is retained for backward compatibility. The authoritative baseline for statistical analysis is in an ADaM dataset. Perm
VSDRVFL Derived Flag Char Record Qualifier Used to indicate a derived record. The value should be "Y" or null. Records that represent the average of other records or that do not come from the CRF are examples of records that would be derived for the submission datasets. If VSDRVFL = "Y," then VSORRES may be null, with VSSTRESC and (if numeric) VSSTRESN having the derived value. Perm
VISITNUM Visit Number Num Timing Clinical encounter number. Numeric version of VISIT, used for sorting. Exp
VISIT Visit Name Char Timing Protocol-defined description of clinical encounter. May be used in addition to VISITNUM and/or VISITDY. Perm
VISITDY Planned Study Day of Visit Num Timing Planned study day of the visit based upon RFSTDTC in Demographics. Perm
TAETORD Planned Order of Element within Arm Num Timing Number that gives the planned order of the Element within the Arm. Perm
EPOCH Epoch Char Timing Epoch associated with the start date/time at which the assessment was made. Perm
VSDTC Date/Time of Measurements Char Timing Date and time of the vital signs assessment represented in ISO 8601 character format. Exp
VSDY Study Day of Vital Signs Num Timing Study day of vital signs measurements, measured as integer days. Algorithm for calculations must be relative to the sponsor-defined RFSTDTC variable in Demographics. Perm
VSTPT Planned Time Point Name Char Timing Text description of time when measurement should be taken. This may be represented as an elapsed time relative to a fixed reference point, such as time of last dose. See VSTPTNUM and VSTPTREF. Examples: "Start", "5 min post". Perm
VSTPTNUM Planned Time Point Number Num Timing Numerical version of VSTPT to aid in sorting. Perm
VSELTM Planned Elapsed Time from Time Point Ref Char Timing Planned elapsed time (in ISO 8601) relative to a planned fixed reference (VSTPTREF). This variable is useful where there are repetitive measures. Not a clock time or a date time variable. Represented as Perm
        an ISO 8601 Duration. Examples: "-PT15M" to represent the period of 15 minutes prior to the reference point indicated by VSTPTREF, or "PT8H" to represent the period of 8 hours after the reference point indicated by VSTPTREF.  
VSTPTREF Time Point Reference Char Timing Name of the fixed reference point referred to by VSELTM, VSTPTNUM, and VSTPT. Examples: "PREVIOUS DOSE", "PREVIOUS MEAL". Perm
VSRFTDTC Date/Time of Reference Time Point Char Timing Date/time of the reference time point, VSTPTREF. Perm