Version Domain Sequence Variable Label Type Controlled Terminology or Format Role CDISC Notes Core
SDTMIG 3.3 SC 1 STUDYID Study Identifier Char Identifier Unique identifier for a study. Req
SDTMIG 3.3 SC 2 DOMAIN Domain Abbreviation Char SC Identifier Two-character abbreviation for the domain. Req
SDTMIG 3.3 SC 3 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
SDTMIG 3.3 SC 4 SCSEQ Sequence Number Num Identifier Sequence number given to ensure uniqueness of subject records within a domain. May be any valid number. Req
SDTMIG 3.3 SC 5 SCGRPID Group ID Char Identifier Used to tie together a block of related records in a single domain for a subject. Perm
SDTMIG 3.3 SC 6 SCSPID Sponsor-Defined Identifier Char Identifier Sponsor-defined reference number. Perhaps preprinted on the CRF as an explicit line identifier or defined in the sponsor's operational database. Perm
SDTMIG 3.3 SC 7 SCTESTCD Subject Characteristic Short Name Char (SCTESTCD) Topic Short name of the measurement, test, or examination described in SCTEST. It can be used as a column name when converting a dataset from a vertical to a horizontal format. The value in SCTESTCD cannot be longer than 8 characters, nor can it start with a number (e.g., "1TEST" is not valid). SCTESTCD cannot contain characters other than letters, numbers, or underscores. Example: "MARISTAT", "NATORIG". Req
SDTMIG 3.3 SC 8 SCTEST Subject Characteristic Char (SCTEST) Synonym Qualifier Verbatim name of the test or examination used to obtain the measurement or finding. The value in SCTEST cannot be longer than 40 characters. Examples: "Marital Status", "National Origin". Req
SDTMIG 3.3 SC 9 SCCAT Category for Subject Characteristic Char Grouping Qualifier Used to define a category of related records. Perm
SDTMIG 3.3 SC 10 SCSCAT Subcategory for Subject Characteristic Char Grouping Qualifier A further categorization of the subject characteristic. Perm
SDTMIG 3.3 SC 11 SCORRES Result or Finding in Original Units Char Result Qualifier Result of the subject characteristic as originally received or collected. Exp
SDTMIG 3.3 SC 12 SCORRESU Original Units Char (UNIT) Variable Qualifier Original unit in which the data were collected. The unit for SCORRES. Perm
SDTMIG 3.3 SC 13 SCSTRESC Character Result/Finding in Std Format Char Result Qualifier Contains the result value for all findings, copied or derived from SCORRES in a standard format or standard units. SCSTRESC should store all results or findings in character format; if results are numeric, they should also be stored in numeric format in SCSTRESN. For example, if a test has results "NONE", "NEG", and "NEGATIVE" in SCORRES, and these results effectively have the same meaning, they could be represented in standard format in SCSTRESC as "NEGATIVE". Exp
SDTMIG 3.3 SC 14 SCSTRESN 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 SCSTRESC. SCSTRESN should store all numeric test results or findings. Perm
SDTMIG 3.3 SC 15 SCSTRESU Standard Units Char (UNIT) Variable Qualifier Standardized unit used for SCSTRESC or SCSTRESN. Perm
SDTMIG 3.3 SC 16 SCSTAT Completion Status Char (ND) Record Qualifier Used to indicate that the measurement was not done. Should be null if a result exists in SCORRES. Perm
SDTMIG 3.3 SC 17 SCREASND Reason Not Performed Char Record Qualifier Describes why the observation has no result. Example: "Subject refused". Used in conjunction with SCSTAT when value is "NOT DONE". Perm
SDTMIG 3.3 SC 18 TAETORD Planned Order of Element within Arm Num Timing Number that gives the planned order of the Element within the Arm. Perm
SDTMIG 3.3 SC 19 EPOCH Epoch Char (EPOCH) Timing Epoch associated with the start date/time at which the assessment was made. Perm
SDTMIG 3.3 SC 20 SCDTC Date/Time of Collection Char ISO 8601 Timing Collection date and time of the subject characteristic represented in ISO 8601 character format. Perm
SDTMIG 3.3 SC 21 SCDY Study Day of Examination Num Timing 1. Study day of collection, measured as integer days. 2. Algorithm for calculations must be relative to the sponsor-defined RFSTDTC variable in Demographics. Perm