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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.

From: Vaccination coverage in children can be estimated from health insurance data

   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