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Intervention: New Chance
Intervention: New Chance
January 24, 2008

Research

The WWC reviewed one study of the effectiveness of New Chance (Quint, Bos, & Polit, 1997), a randomized controlled trial that met WWC evidence standards.

The Quint, Bos, and Polit study (1997) examined the New Chance program in 16 sites in 10 states. Between 1989 and 1991, 2,322 women who were eligible and volunteered for the program were randomly assigned: 1,553 to the New Chance group and 769 to the control group. The results summarized here are based on data for the 1,401 New Chance mothers and 678 control group mothers who completed the 42-month follow-up survey.

Extent of evidence

The WWC categorizes the extent of evidence in each domain as small or moderate to large (see the PDF File What Works Clearinghouse Extent of Evidence Categorization Scheme (30 KB)). The extent of evidence takes into account the number of studies and the total sample size across studies that met WWC evidence standards.5

The WWC considers the extent of evidence for New Chance to be small for completing school.

5 The Extent of Evidence Categorization was developed to tell readers how much evidence was used to determine the intervention rating, focusing on the number and size of studies. Additional factors associated with a related concept, external validity—such as students’ demographics and types of settings in which studies took place—are not taken into account for the categorization. Information about how the extent of evidence rating was determined for New Chance is in Appendix A6.