CHIP Shots: Association Between the State Children's Health Insurance Programs and Immunization Rates

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Abstract
Objective. The Balanced Budget Act of 1997 established the State Children's Health Insurance Program (SCHIP), which makes health insurance available to children in near-poor families who are ineligible for Medicaid. SCHIP mandates that all state plans cover the cost and administration of childhood vaccines. Whether SCHIP has narrowed immunization coverage rates between near-poor and nonpoor children is unknown. The objective of this study was to use data from the National Immunization Survey from 1995 to 2002 to analyze changes in immunization coverage rates among poor, near-poor, and nonpoor children before and after implementation of SCHIP.