Lymphocyte and neutrophil number, D-Dimer, ferritin, E2, testosterone, soluble ACE2 and Ang1-7 plasma levels were measured in total sex-aggregated patients and in female and male patients, stratified according to their P/F values at admission: P/F < 200 mmHg indicating moderate/severe ARDS and P/F ≥ 200 mmHg, indicating mild/no ARDS. Here, ACE2 is linked to acute respiratory distress syndrome.