F2 and diabetes mellitus: Also, the results of the evaluated factors such as diabetes, hypertension, age, ESR, BUN, BS, CR, PT, SGPT, SGOT, ALP, HCT, Hb, LYM, Mono, and NUT indicate the significant effects on the COVID-19 death that the same finding was reported in the studies of Bertimas et al., Liu et al., Bahl et al., Guan et al., Cao et al., and Chen et al. So that the probability of death increased impressively when increasing their level of the normal range [36–38].