Table 3.
Proportion of children with mixing in their DTaP vaccination series
| Cohort | Age-appropriate Doses | Analysis (N) | % | 95% CI |
|---|---|---|---|---|
| Birth to <8 Months Continuous Enrollment | Doses 1–3 | Estimate (N=254, 119) | 4.7 | (4.6, 4.7) |
| Sensitivity #1 (N=231, 242) | 5.1 | (5.0, 5.2) | ||
| Sensitivity #2 (N=300, 020) | 4.2 | (4.2, 4.3) | ||
| Sensitivity #3 (N=300, 020) | 19.2 | (19.1, 19.4) | ||
| Birth to <20 Months Continuous Enrollment | Doses 1–4 | Estimate (N=59, 513) | 29.0 | (28.6, 29.4) |
| Sensitivity #1 (N=48, 003) | 29.1 | (28.7, 29.5) | ||
| Sensitivity #2 (N=191, 859) | 12.0 | (11.9, 12.2) | ||
| Sensitivity #3 (N=191, 859) | 78.0 | (77.8, 78.2) | ||
| Birth to <7 Years Continuous Enrollment | Doses 1–5 | Estimate (N=462) | 39.0 | (34.5, 43.6) |
| Sensitivity #1 (N=15) | 80.0 | (51.9, 95.7) | ||
| Sensitivity #2 (N=5, 999) | 13.0 | (12.1, 13.8) | ||
| Sensitivity #3 (N=5, 999) | 95.3 | (94.7, 95.8) |
Estimate: Includes children with ≥2 DTaP vaccinations and complete brand information on all administered DTaP vaccinations.
Sensitivity #1: Conducted among children with complete DTaP vaccination history by excluding those with vaccinations processed between 2003 and 2005 by the claims processing system that changed DTaP vaccinations submitted for reimbursement with CPT® code 90700 to a general vaccination code.
Sensitivity #2: DTaP vaccinations with unknown brand were assumed to be the same brand as the first administered DTaP vaccine with known brand information.
Sensitivity #3: Children with a DTaP vaccination with unknown brand were assumed to have a mixed series.