Table 2

Discrepancies in pertussis-related immunization data between provider records and the immunization registry.


Current registry user sites
Future direct-EMR-transfer sites




n
% with discrepancy
Range among provider sites
n
% with discrepancy
Range among provider sites

Discrepancies in pertussis-related immunization series






     Discrepancy in whether subject is up-to-date for pertussis-related immunizations
288
22.6
12.4–45.7
377
4.0
0–18.6
     Discrepancy in number of pertussis-related immunizations received by subject
288
34.7
19.8–60.1
377
11.9
5.0–30.2
          Any present in provider record but not in registry
288
27.8
11.9–60.9
377
0.3
0–1.2
          Any present in registry but not in provider record
288
9.7
4.8–17.5
377
0.3
0–1.2
     Discrepancy in date of any pertussis-related immunization in series
288
23.6
13.2–35.0
377
18.0
10.9–36.9
     Discrepancy in formulation of any pertussis-related immunization in series
288
11.1
0–24.4
377
5.3
0–23.3
Discrepancies in pertussis-related immunizations






     Date discrepancy
1410
10.2
6.1–15.8
1848
8.0
5.5–17.0
          Discrepancy of 1–29 days
1410
9.0
4.5–15.3
1848
6.6
3.0–16.5
          Discrepancy of 1–11 months
1410
0.9
0–1.5
1848
0.8
0–2.0
          Discrepancy of ≥ 1 year
1410
0.4
0–0.5
1848
0.5
0–1.5
     Discrepancy in formulation

34.4
11.8–50.1

29.1
17.6–36.9
          Discrepancy in whether pertussis-related immunization contained pertussis vaccine (vs diphtheria-tetanus only)
1410
0.6
0–2.0

0.4
0–1.2
     Discrepancy in manufacturer, among those with manufacturer noted in provider record
468
100
NA
645
94.4
76.2–100
     Discrepancy in lot number, among those with lot number noted in provider record)
539
100
NA
693
95.1
37.5–100

Mahon et al. BMC Public Health 2008 8:160   doi:10.1186/1471-2458-8-160