Ong, Toan C.

A harmonized data quality assessment terminology and framework for the secondary use of electronic health record data

Kahn, M. G., Callahan, T. J., Barnard, J., Bauck, A. E., Brown, J., Davidson, B. N., Estiri, H., Goerg, C., Holve, E., Johnson, S. G., et al. (2016) · eGEMs (Generating Evidence & Methods to improve patient outcomes)

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Waning 2-Dose and 3-Dose Effectiveness of mRNA Vaccines Against COVID-19–Associated Emergency Department and Urgent Care Encounters and Hospitalizations Among Adults During Periods of Delta and Omicron Variant Predominance — VISION Network, 10 States, August 2021–January 2022

Ferdinands, J. M., Rao, S., Dixon, B. E., Mitchell, P. K., DeSilva, M. B., Irving, S. A., Lewis, N., Natarajan, K., Stenehjem, E., Grannis, S. J., et al. (2022) · MMWR. Morbidity and Mortality Weekly Report

SARS-CoV-2 and COVID-19 ResearchVaccine Coverage and Hesitancy

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Effectiveness of a Third Dose of mRNA Vaccines Against COVID-19–Associated Emergency Department and Urgent Care Encounters and Hospitalizations Among Adults During Periods of Delta and Omicron Variant Predominance — VISION Network, 10 States, August 2021–January 2022

Thompson, M. G., Natarajan, K., Irving, S. A., Rowley, E. A., Griggs, E. P., Gaglani, M., Klein, N. P., Grannis, S. J., DeSilva, M. B., Stenehjem, E., et al. (2022) · MMWR. Morbidity and Mortality Weekly Report

SARS-CoV-2 and COVID-19 ResearchVaccine Coverage and Hesitancy

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Waning of vaccine effectiveness against moderate and severe covid-19 among adults in the US from the VISION network: test negative, case-control study

Ferdinands, J. M., Rao, S., Dixon, B. E., Mitchell, P. K., DeSilva, M. B., Irving, S. A., Lewis, N., Natarajan, K., Stenehjem, E., Grannis, S. J., et al. (2022) · BMJ

SARS-CoV-2 and COVID-19 ResearchVaccine Coverage and Hesitancy

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Effectiveness of 2, 3, and 4 COVID-19 mRNA Vaccine Doses Among Immunocompetent Adults During Periods when SARS-CoV-2 Omicron BA.1 and BA.2/BA.2.12.1 Sublineages Predominated — VISION Network, 10 States, December 2021–June 2022

Link-Gelles, R., Levy, M. E., Gaglani, M., Irving, S. A., Stockwell, M., Dascomb, K., DeSilva, M. B., Reese, S. E., Liao, I.-C., Ong, T. C., et al. (2022) · MMWR. Morbidity and Mortality Weekly Report

SARS-CoV-2 and COVID-19 ResearchCOVID-19 epidemiological studies

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Association between COVID-19 mRNA vaccination and COVID-19 illness and severity during Omicron BA.4 and BA.5 sublineage periods

Link-Gelles, R., Levy, M. E., Natarajan, K., Reese, S. E., Naleway, A. L., Grannis, S. J., Klein, N. P., DeSilva, M. B., Ong, T. C., Gaglani, M., et al. (2022) · medRxiv

SARS-CoV-2 and COVID-19 ResearchCOVID-19 Clinical Research Studies

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Developing a computable phenotype for identifying children, adolescents, and young adults with diabetes using electronic health records in the DiCAYA Network.

Shao, H., Thorpe, L. E., Islam, S., Bian, J., Guo, Y., Li, P., Bost, S., Dabelea, D., Conway, R., Crume, T., et al. (2025) · Diabetes Care

Machine Learning in HealthcareMedical Coding and Health Information

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