LAUSR

who died. Results: There were 12,836 HD patients with a suspicion of COVID-19 who received RT-PCR testing (8,895 COVID-19 positive: mean age 61.8 years, 54% male, 37% white race, 69% with diabetes, 24% with ischemic heart disease (IHD); 3,941 COVID-19 negative: mean age 60.3 years, 55% male, 43% white race, 66% with diabetes, 24% with IHD). The trajectories for several clinical/laboratory parameters (vital signs, hematology, nutrition, iron indices) appeared to have changed about 10 days before suspicion among patients who were confirmed COVID-19 positive; the trends were distinct as compared to patients found to be COVID negative (select variables shown in Figure 1). Many alternations in variables before COVID-19 were subtle. HD patients with COVID-19 who died within 30 days of suspicion were more often older, male, white race, and had a higher comorbidity burden (998 died: mean age 69.1 years, 60% male, 42% white race, 80% with diabetes, 29% with IHD; 7,897 survived: mean age 60.8 years, 53% male, 37% white race, 68% with diabetes, 23% with IHD). There appeared to be unique trajectories before and after suspicion of COVID-19 in patients who died versus those who survived (select variables shown in Figure 1).