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Additional information from parental questionnaires and pharmacy records for registration of birth defects.
J Reefhuis1, H E de Walle, L T de Jong-van den Berg
1Department of Medical Genetics, University of Groningen, The Netherlands. j.reefhuis@medgen.azg.nl
Insights
The new EUROCAT Northern Netherlands methodology significantly improves birth defect data collection. It enhances data completeness and quality, particularly for drug exposure, compared to the old notification system.
Area of Science:
- Public Health
- Epidemiology
- Medical Data Collection
Background:
- EUROCAT Northern Netherlands historically collected birth defect data via notification forms.
- The previous method had limitations in data quantity and completeness.
Purpose of the Study:
- To compare the effectiveness of the old and new data collection methodologies for EUROCAT Northern Netherlands.
- To assess response rates, data quality, and data quantity between the two methods.
Main Methods:
- Implemented a new methodology including parental questionnaires, pharmacist drug dispensing records, and telephone interviews.
- Compared data from the new methodology with the traditional notification form approach.
Main Results:
- Achieved high response rates: 90.4% for parental questionnaires and 96.6% for pharmacist information.
- New method yielded more complete data on ethnicity and serum screening.
- Significantly improved the quality of drug exposure data.
Conclusions:
- The enhanced EUROCAT methodology substantially improves the completeness and quality of birth defect data.
- Parental questionnaires and pharmacist data are valuable additions to the registry.
- General practitioner input remains crucial for diagnostic verification.
Abstract:
EUROCAT Northern Netherlands registers children born with a birth defect in the Northern Netherlands. Data used to be collected via a notification form, which is filled out by the notifier and, if necessary, completed by the general practitioner. To increase the amount of information, EUROCAT started using new methodology in July 1997. The new procedure consists of three additional steps. Firstly, a parental questionnaire with 43 questions concerning pregnancy and medical history is sent to the parents. Also, the pharmacist is approached to provide information on the drugs that were dispensed to the mother in the period from three months before until the end of the pregnancy. The last step is a telephone interview with the mother. In this study the old and new method are compared with respect to response, quality and quantity of the data. Of the 198 parental questionnaires included in this study, 179 (90.4%) were returned. The pharmacists returned 173 out of 179 requests for information (96.6%). The parental information is more complete for ethnicity and serum screening. The quality of the drug exposure data is much better using the new methodology. The general practitioner's input is still necessary for specification and verification of the diagnosis.