Fig. 1.

Kaplan–Meier survival curve according to presence/absence of lupus anticoagulant in patients hospitalized for COVID-19 during the follow-up period (18.8 ± 13.2 days—range 1–79). For each time interval, survival probability is calculated as the number of subjects surviving divided by the number of patients at risk (“number at risk”). Subjects who have died are not counted as “at risk”