Vaccines for Children program, United States, 1997.

OBJECTIVES

1. To determine the proportion of preschool children receiving immunizations from providers enrolled in the Vaccines for Children (VFC) program; 2) to assess whether their immunization providers serve as their medical home for primary care; and 3) to examine the relationship between various provider characteristics and immunization status.

DESIGN

Two-phase national survey consisting of parent interviews verified by provider record check.

SETTING

A total of 78 survey areas (50 states, the District of Columbia, and 27 urban areas).

PATIENTS OR OTHER PARTICIPANTS

Noninstitutionalized children from 19 to 35 months of age in 1997.

INTERVENTIONS

None.

OUTCOME MEASURES

VFC penetration rate (the percentage of children who received all or some vaccines from a VFC-enrolled provider); the frequency with which children received all or some vaccines within a medical home; the number of parent-reported immunization providers; and 4:3:1:3 up-to-date status at 19 to 35 months of age.

RESULTS

OFF 28 298 children interviewed for whom consent to contact providers was obtained, complete provider data were available for 21 522 (76%). Of these children, approximately 75% received all or some immunizations from a VFC-enrolled provider, 73% received all or some immunizations within a medical home, and 75% had one immunization provider. Children received all or some immunizations from a VFC-enrolled provider more frequently when vaccinated by pediatricians versus family physicians or in public facilities versus private practice. After controlling for poverty, immunization coverage varied only slightly with receipt of vaccines from a VFC-enrolled provider, receipt of vaccines within a medical home, and the number of parent-reported providers. Among children vaccinated within a medical home, those vaccinated solely by pediatricians were 1.63 times as likely to be 4:3:1:3 up-to-date than were those vaccinated solely by family physicians after removing the effects of poverty.

RECOMMENDATIONS

Greater numbers of children are likely to benefit from an even higher participation rate among immunization providers in the VFC program, particularly among family physicians and private physicians. The public-private collaboration developed by the VFC program should be capitalized on so that public sector resources can help pediatricians and family physicians practice according to the Standards for Pediatric Immunization Practices.