| Name | Label | Concept | Required | Attribute of | Limit | Predicate Type | Group | |
|---|---|---|---|---|---|---|---|---|
| 1 variable | ||||||||
| CT23_COL2_R21A | Annotation of 18 to 34 years!!PERIOD OF MILITARY SERVICE!!Civilian veterans 18 years and over!!Gulf War (8/1990 to 8/2001) and Vietnam Era | Veteran Status, Period of Military Service, Service-Connected Disability Rating Status, and Sex by Age | not required | CT23_COL2_R21 | 0 | string | CT23 | |