Combination vaccine use and vaccination quality in a managed care population
Laura E Happe1, Orsolya E Lunacsek, Gary S Marshall
1Xcenda, Palm Harbor, FL 34685, USA. lhappe@xcenda.com
Insights
The pentavalent combination vaccine (diphtheria/tetanus/pertussis/hepatitis B/polio) improved childhood immunization coverage and timeliness. This vaccine led to higher vaccination rates by age two and more on-time vaccinations.
Area of Science:
- Pediatric Vaccinology
- Public Health
- Health Services Research
Background:
- Childhood immunization is crucial for disease prevention.
- Managed care organizations face challenges in achieving optimal vaccination coverage and timeliness.
- The pentavalent vaccine combines multiple antigens into a single injection, potentially simplifying administration.
Purpose of the Study:
- To assess the impact of the pentavalent combination vaccine (diphtheria/tetanus/pertussis/hepatitis B/polio) on immunization coverage and timeliness.
- To compare vaccination outcomes between children receiving the combination vaccine and those receiving individual vaccines.
Main Methods:
- Retrospective matched-cohort analysis using administrative claims and immunization registry data.
- Two demographically matched cohorts were created: one receiving the DTaP/HepB/IPV combination vaccine and a reference cohort.
- Vaccination coverage and timeliness were assessed up to 24 months of age for the HEDIS Combination 2 series and individual vaccines.
Main Results:
- Children receiving the pentavalent combination vaccine showed significantly higher complete vaccination coverage for the HEDIS Combination 2 series by age two (86.9% vs. 74.1%).
- The combination vaccine cohort also demonstrated improved on-time vaccination rates (45.2% vs. 37.5%).
- These improvements were statistically significant (P <.001 for coverage, P = .001 for timeliness).
Conclusions:
- The DTaP/HepB/IPV pentavalent combination vaccine is associated with enhanced immunization coverage and age-appropriate vaccination schedules.
- Implementation of combination vaccines can be an effective strategy to improve childhood immunization rates in managed care settings.
Objective:
To evaluate the impact of a pentavalent combination vaccine on childhood immunization coverage rates and timeliness within a managed care organization.
Study Design:
Retrospective matched-cohort analysis of encounter data from administrative claims and a state immunization registry.
Methods:
Children were stratified into 2 demographically matched cohorts (combination and reference), based on receipt of the DTaP/HepB/IPV combination vaccine. Children were followed until 24 months of age, and coverage rates and on-time rates were assessed. Outcomes were measured for the HEDIS Combination 2 vaccine series (4 doses of diphtheria/tetanus/pertussis, 3 doses of polio, 1 dose of measles/mumps/rubella, 3 doses of Haemophilus influenzae type b, 3 doses of hepatitis B, and 1 dose of varicella) and each vaccine series individually.
Results:
Children in the combination cohort were significantly more likely to be fully vaccinated for the HEDIS Combination 2 series by 2 years of age and to be vaccinated within the recommended age ranges. In the combination cohort 86.9% (752/865) of patients were fully covered compared with only 74.1% (641/865) of the reference cohort (P <.001). In the combination cohort 45.2% (391/865) of patients received vaccinations on time versus 37.5% (324/865) of the reference cohort, P = .001.
Conclusions:
Receipt of DTaP/HepB/IPV was associated with improved coverage and age-appropriate immunization in a managed care population.
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