Research on Social Work Practice

 

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This version was published on May 1, 2008
Research on Social Work Practice, Vol. 18, No. 3, 212-222 (2008)
DOI: 10.1177/1049731507307791

Propensity Score Matching Strategies for Evaluating the Success of Child and Family Service Programs

Richard P. Barth

University of Maryland, rbarth{at}ssw.umaryland.edu

Shenyang Guo

University of North Carolina

Julie S. McCrae

University of Pittsburgh

This article presents propensity score matching as a method to implement randomized conditions to analyze service effects using nonexperimental data. Most social work research is challenged to implement randomized clinical trials, whereas administrative and survey data are often available and can provide valuable information about services received under naturalistic conditions. This article discusses the assumptions of this method and the analytic steps involved; and it presents three examples of the approach, demonstrating that it is possible to approximate the conditions of a randomized controlled trial, and when selection bias is reduced, investigators can have more confidence in their findings.

Key Words: child welfare • propensity score matching • evaluation • services research


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