IFH’s Research on COVID-19 enabled by UC CORDS

October 8, 2022

UC CORDS, the University of California COVID research data set, is one of the nation’s first COVID-19-focused sets of real-time data from patient encounters1. UC CORDS – HIPAA-compliant limited data set – includes anonymized data collected from patients’ electronic health records across the five main academic health centers that UC operates. The data set accelerates COVID-19 research, providing insights crucial to fighting COVID-19 and understanding the virus, its risk, and outcomes for diverse populations.

IFH has had a significant contribution to COVID research using US CORDS. Our researchers studied the impact of COVID-19 on diverse populations resulting in multiple peer-reviewed publications. Using UC CORDS, Prof. Watanabe’s team has assessed the relationship between age and hospitalization among high-risk patients2. A group of IFH members, led by Prof. Rahmani, also pioneered investigating COVID-19 symptoms using individuals’ heart rate and blood pressure data3,4,5,6. The team continues working on new research topics: to, for example, assess gender differences in vaccination rates and their impacts.


    1. UC CORDS connects scientists with patient data for actionable insights into COVID-19 and more equitable care.
    2. Watanabe, J.H., Kwon, J. and Mehta, S.R., 2021. Association of Age and Hospitalization Amongst Those with Underlying High-risk Conditions at COVID-19 Diagnosis in a Large, State-wide Health System. Journal of general internal medicine, 36(9), pp.2906-2908.
    3. Mehrabadi, M.A., Aqajari, S.A.H., Azimi, I., Downs, C.A., Dutt, N. and Rahmani, A.M., 2021, November. Detection of covid-19 using heart rate and blood pressure: Lessons learned from patients with ards. In 2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC) (pp. 2140-2143). IEEE.
    4. Pinto, M.D., Downs, C.A., Huang, Y., El-Azab, S.A., Ramrakhiani, N.S., Barisano, A., Yu, L., Taylor, K., Esperanca, A., Abrahim, H.L. and Hughes, T., 2022. A distinct symptom pattern emerges for COVID-19 long-haul: a nationwide study. Scientific Reports12(1), pp.1-11.
    5. Huang, Y., Pinto, M.D., Borelli, J.L., Mehrabadi, M.A., Abrihim, H., Dutt, N., Lambert, N., Nurmi, E.L., Chakraborty, R., Rahmani, A.M. and Downs, C.A., 2021. COVID symptoms, symptom clusters, and predictors for becoming a long-hauler: looking for clarity in the haze of the pandemic. SAGE Journal of Clinical Nursing Research, 2022.
    6. Lambert, N., Survivor Corps, El‐Azab, S.A., Ramrakhiani, N.S., Barisano, A., Yu, L., Taylor, K., Esperança, Á., Mendiola, C., Downs, C.A. and Abrahim, H.L., 2022. The other COVID‐19 survivors: Timing, duration, and health impact of post‐acute sequelae of SARS‐CoV‐2 infection. Journal of Clinical Nursing.
IFH’s Research on COVID-19 enabled by UC CORDS


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