Table 2.

Comparison of vaccination coverage estimates (%; 95% CI) between the two KVB datasets, the dataset for AOK insured children in the reduced KVB cohort and the validation data set for two different vaccinations at different children's ages.

		Vaccination coverage (%)
			DTPPolioHibHep
Data Set	N	MMR 1st dose at 2 y	1st dose at 3 months	Full primed at 1 y	Full immunized at 2 y
Original KVB dataset	196,732	60.4	14.6	45.7	40.4
		60.2–60.7	14.4–14.8	45.5–45.9	40.2–40.7
Reduced KVB dataset	111,977	75.4	22.3	67.5	56.0
		75.1–75.6	22.1–22.6	67.0–67.6	55.7–56.3
Subset of the reduced KVB data set (AOK Bavaria insured only)	44,755	77.2	24.1	70.5	57.7
		76.8–77.6	23.7–24.5	70.1–71.0	57.3–58.2
Validation data set	40,645	76.0	23.1	68.8	56.6
		75.5–76.4	22.7–23.5	68.3–69.2	56.1–57.1