title: Introduction to the special issue: subgroup analysis in prevention and intervention research.
authors.forename: Lauren H
authors.initials: LH
authors.lastname: Supplee
authors.forename: Brendan C
authors.initials: BC
authors.lastname: Kelly
authors.forename: David P
authors.initials: DP
authors.lastname: MacKinnon
authors.forename: David M
authors.initials: DM
authors.lastname: Mackinnon
authors.forename: Meryl Yoches
authors.initials: MY
authors.lastname: Barofsky
mesh_terms: D006302:Health Services Research; D011050:Policy Making; D011314:Preventive Health Services / Q000458:organization & administration*