Skip to main content

Table 3 Discrepancies in pertussis-related immunization data between provider records and the immunization registry by age group.

From: Implications for registry-based vaccine effectiveness studies from an evaluation of an immunization registry: A cross-sectional study

  % of subjects with discrepancy
Current registry user sites
% of subjects with discrepancy
Future direct-EMR-transfer sites
  0–10 years old 11–17 years old 0–10 years old 11–17 years old
Discrepancies in pertussis-related immunization series     
   Discrepancy in whether subject is up-to-date for pertussis-related immunizations 26.1 19.2 3.1 5
   Discrepancy in number of pertussis-related immunizations received by subject 30.3 37.7 7.2 17
Any present in provider record but not in registry 23.2 32.2 0 0.6
Any present in registry but not in provider record 5.6 13.7 0 0.6
   Discrepancy in date of any pertussis-related immunization in series 16.9 30.1 15.9 20.3
   Discrepancy in formulation of any pertussis-related immunization in series 12.0 10.3 4.1 6.6
Discrepancies in pertussis-related immunizations     
   Date discrepancy 4.9 14.3 5.5 10.2
Discrepancy of 1–29 days 3.8 13.1 4.4 8.5
Discrepancy of 1–11 months 1 0.8 0.8 0.8
Discrepancy of ≥ 1 year 0.2 0.5 0.2 0.8
   Discrepancy in formulation 28.3 39.1 21.4 35.7
Discrepancy in whether pertussis-related immunization contained pertussis vaccine (vs diphtheria-tetanus only) 0 1.1 0 0.8
   Discrepancy in manufacturer, among those with manufacturer noted in provider record 100 100 99.8 86.1
   Discrepancy in lot number, among those with lot number noted in provider record) 100 100 99.8 89.0