Provider characteristics and behaviors as predictors of immunization coverage

Area of Science:

• Pediatric healthcare
• Public health
• Immunization practices

Background:

• Existing studies on immunization behaviors often rely on self-reported data, lacking objective validation through actual immunization rates.
• This research bridges the gap between reported behaviors and objectively measured immunization coverage in young children.

Purpose of the Study:

• To evaluate the relationship between provider characteristics, immunization practices, and objectively measured immunization rates in children under 36 months.
• To identify factors influencing immunization coverage and inform strategies for improvement.

Main Methods:

• Surveys on immunization behaviors were administered to 251 pediatric, family, and general providers in Pennsylvania in 1997.
• Provider survey responses were linked to patient chart audits to determine practice-level immunization rates for children under 36 months.

Main Results:

• Overall immunization rates at 12 months (69%) were below national targets.
• Pediatricians demonstrated significantly higher immunization rates (78%) compared to family/general practitioners (58%).
• Provider specialty was the only significant predictor of immunization coverage in multivariate analysis, despite other associated behaviors like vaccine administration under false contraindications and willingness to administer multiple injections.

Conclusions:

• Pediatricians exhibit superior immunization coverage rates compared to family/general practitioners.
• While pediatricians manage larger patient volumes, the absolute number of immunization-delayed children at 12 months is comparable between provider types.
• Interventions to enhance immunization coverage should be implemented for both pediatric and family/general practice settings.