2025 Methods and Sources

The documents linked below detail the steps in our evidence review method; the process for determining state’s progress toward adopting and implementing policies and strategies, including all state-specific source notes; and the calculation and data source information for the outcomes and demographics presented in all Prenatal-to-3 Policy Impact Center materials. The information available here will continue to evolve as we update state-specific information, identify new evidence-based policies and strategies, and process new measures that facilitate tracking state progress.

• Evidence Review Process
  • Method for Determining Which Policies and Strategies are Effective
  • Policy Clearinghouse Search Process and Parameters
    
  • Process to Identify Effective Policies to Strengthen the Prenatal-to-3 System of Care (Osborne chapter) from The Scale-Up Effect in Early Childhood and Public Policy: Why Interventions Lose Impact at Scale and What We Can Do About It
• Methods and Sources Used to Determine State Progress
  • Effective Policies
    • Expanded Income Eligibility for Health Insurance  (Coming Soon)
    • Paid Family and Medical Leave (Coming Soon)
    • State Minimum Wage (Coming Soon)
    • State Earned Income Tax Credit (Coming Soon)
  • Effective Strategies
    • Reduced Administrative Burden for SNAP (Coming Soon)
    • Comprehensive Screening and Connection Programs (Coming Soon)
    • Child Care Subsidies (Coming Soon)
    • Group Prenatal Care (Coming Soon)
    • Community-Based Doulas (Coming Soon)
    • Evidence-Based Home Visiting Programs (Coming Soon)
    • Early Head Start (Coming Soon)
    • Early Intervention Services (Coming Soon)
  • Emerging Strategies
• Methods and Sources Used to Track State-Level Indicators of Child and Family Wellbeing 
• Methods and Sources Used to Calculate State-Level Demographic Characteristics of the PN-3 Population 
• Methods and Sources Used for the Policy Impact Calculator (Coming Soon)