title: The effectiveness of family planning programs evaluated with true experimental designs.
abstract: OBJECTIVE
  This paper describes the magnitude of effects for family planning programs evaluated with true experimental designs.
  
  
  METHODS
  Studies that used true experimental designs to evaluate family planning programs were identified and their results subjected to meta-analysis.
  
  
  RESULTS
  For the 14 studies with the information needed to calculate effect size, the Pearson r between program and effect variables ranged from -.08 to .09 and averaged .08.
  
  
  CONCLUSIONS
  The programs evaluated in the studies considered have had, on average, smaller effects than many would assume and desire.
authors.affiliation: Department of Health Behavior and Health Education, School of Public Health, University of North Carolina, Chapel Hill 27599-7400, USA.
authors.forename: K E
authors.initials: KE
authors.lastname: Bauman
mesh_terms: D005193:Family Planning Services; D006801:Humans