title: Impact evaluation of service programs: three flexible designs.
authors.forename: J
authors.initials: J
authors.lastname: Mckillip
mesh_terms: D005069:Evaluation Studies as Topic; D009934:Organization and Administration; D015397:Program Evaluation; D015203:Reproducibility of Results; D012106:Research; D012107:Research Design
keywords: Control Groups; Evaluation; Evaluation Methodology; Measurement; Organization And Administration; Program Effectiveness; Program Evaluation; Programs; Reliability; Research Methodology; Summary Report