Table 3.2.1 ADSL Identifier Variables
| Metadataspec |
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| Variable Name | Variable Label | Type | Codelist/ Controlled Terms | Core | CDISC Notes |
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| STUDYID | Study Identifier | Char |
| Req | DM.STUDYID | | USUBJID | Unique Subject Identifier | Char |
| Req | DM.USUBJID | | SUBJID | Subject Identifier for the Study | Char |
| Req | DM.SUBJID. SUBJID is required in ADSL, but permissible in other datasets. | | SITEID | Study Site Identifier | Char |
| Req | DM.SITEID. SITEID is required in ADSL, but permissible in other datasets. | | SITEGRy | Pooled Site Group y | Char |
| Perm | Character description of a grouping or pooling of clinical sites for analysis purposes. For example, SITEGR3 is the name of a variable containing site group (pooled site) names, where the grouping has been done according to the third site grouping algorithm, defined in variable metadata; SITEGR3 does not mean the third group of sites. | | SITEGRyN | Pooled Site Group y (N) | Num |
| Perm | Numeric representation of SITEGRy. There must be a one-to-one relationship between SITEGRyN and SITEGRy within a study. SITEGRyN cannot be present unless SITEGRy is also present. When SITEGRy and SITEGRyN are present, then on a given record, either both must be populated or both must be null. | | REGIONy | Geographic Region y | Char |
| Perm | Character description of geographical region. For example, REGION1 might have values of "Asia", "Europe", "North America", "Rest of World"; REGION2 might have values of "United States", "Rest of World". | | REGIONyN | Geographic Region y (N) | Num |
| Perm | Numeric representation of REGIONy. Orders REGIONy for analysis and reporting.There must be a one-to-one relationship between REGIONyN and REGIONy within a study. REGIONyN cannot be present unless REGIONy is also present. When REGIONy and REGIONyN are present, then on a given record, either both must be populated or both must be null. | |