{description: Actual number of participants enrolled in study across all groups, package_name: hl7.fhir.r6.core, name: recruitment-actual, type: number, package_version: 6.0.0-ballot2, class: unknown, kind: null, url: 'http://hl7.org/fhir/SearchParameter/ResearchStudy-recruitment-actual', version: 6.0.0-ballot2}