Wednesday, December 7, 2005 - 3:30 PM
89

Accuracy of Birth Certificate Data on Reporting Hepatitis B Screening in Pregnant Women

Wendy Lee Griffin, Viral Hepatits Program, Colorado Department of Public Health and Environment, 4300 Cherry Creek Drive South, Denver, CO, USA


Learning Objectives for this Presentation:
1. The participant will understand the risk of perinatal transmisssion of hepatitis B.
2.The participants will understand the importance of accurately reporting hepatitis B screening on the birth certificate.


Background:
A common mode of transmission of hepatitis B is from mothers who are hepatitis B surface antigen (HBsAg) positive to infants at birth and during infancy. Hepatitis B screening is recorded on the birth certificate. The objective of the study was to determine how accurate the birth certificate database is in reporting on whether a woman was tested for hepatitis B infection during pregnancy.

Methods:
We compared the birth certificate database and hospital medical records on reporting if hepatitis testing was done on 1255 women who delivered in ten hospitals in Colorado in 2002. We calculated agreement, sensitivity, specificity, and positive and negative predictive values for all ten hospitals combined and also reported on individual hospitals.

Results:
Overall agreement between birth certificate database and hospital record for all ten hospitals combined was 93%. Overall sensitivity was 96.5% (CI 95%-97%) and specificity was 2.4% (CI .04%-12%). Agreement for the individual hospitals ranged from 84% to 97%. Sensitivity ranged from 85.1% to 100%.

Conclusions:
The findings of this study indicate that the birth certificate accurately reports women who were tested for hepatitis B during pregnancy but is not helpful in identifying women who are not tested.

See more of F1 - Evaluation of Perinatal HBsAg Identification Based on Universal Reporting Mechanisms
See more of The 2005 National Viral Hepatitis Prevention Conference