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Self-Reported SARS-CoV-2 Vaccination Is Consistent with Electronic Health Record Data among the COVID-19 Community
Ashley H Tjaden1, Lida M Fette1, Sharon L Edelstein1
1The Biostatistics Center, George Washington University, Rockville, MD 20852, USA.
Vaccines
|July 27, 2022
Summary
Self-reported COVID-19 vaccination data, including dates and product type, can reliably substitute for electronic health records in large observational studies, ensuring data accuracy.
Area of Science:
- Epidemiology
- Vaccinology
Background:
- Accurate SARS-CoV-2 vaccine data is crucial for observational studies.
- Self-reported data offers a potentially more accessible and cost-effective alternative to electronic health records (EHRs).
Purpose of the Study:
- To evaluate the accuracy of self-reported COVID-19 vaccination data compared to EHRs.
- To assess the reliability of self-reported vaccine brand, date, and number of doses.
Main Methods:
- Adult participants (N=41,484) with authenticated EHRs were surveyed about their SARS-CoV-2 vaccination.
- Self-reported data from daily and supplemental surveys were compared against EHR data.
- Agreement rates and Bland-Altman plots were used for comparison.
Main Results:
- 95% of participants with EHR vaccination evidence self-reported vaccination.
- Self-reported dates were within ±7 days of EHR dates for 97.6% (immediate) and 92.0% (delayed) surveys.
- Vaccine product details matched EHRs for over 98% of participants.
Conclusions:
- Self-reported vaccination details serve as a reliable surrogate for EHR data in large observational studies.
- This method enhances data availability when medical records are inaccessible.
- Internal validity is strengthened by secondary confirmation with EHR data.
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