Researchers at each center collected data using an online questionnaire hosted at www.clinicalsurveys.net, EPICOVIDEHA is registered at http://www.clinicaltrials.gov, with the identifier NCT 04733729. Only de-identified data have been analyzed.
Data collected included: age at transplantation (dichotomized as <50 years and ≥50 years), sex (male vs female), time from HSCT to the diagnosis of COVID-19, immunosuppression within 6 months of COVID-19 diagnosis, conditioning intensity (myeloablative vs reduced intensity), GVHD prophylaxis, time to engraftment, development of acute or chronic GVHD before COVID-19 diagnosis and immunodeficiency scoring index (ISI) at the time of COVID-19 infection. Clinically significant outcomes (hospital admission and intensive care unit [ICU] admission, vital status) were also evaluated. We did not collect information on treatment strategies of COVID-19.
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