Specifies the administrative functionality within a formal experimental design for which the ResearchSubject role was established. Examples: screening - role is used for pre-enrollment evaluation portion of the design; enrolled - role is used for subjects admitted to the active treatment portion of the design.
Legenda: Type L=leaf, S=specializable, A=abstract, D=deprecated. NullFlavor OTH (other) suggests text in originalText. HL7 V3: NullFlavors to appear in @nullFlavor attribute instead of @code.