CRP and COVID-19: While univariate logistic regression analyses indicated age, gender and biochemical parameters listed on Table 4 as statistically significant parameters associated with COVID-19 severity; multivariate regression analysis only indicated L-NMMA (cut-off = 120 nmol/L, OR = 34, 95% confidence interval (CI) = 3.5-255.0, P = 0.002), CRP (cut-off = 32 mg/L, OR = 37, 95% CI = 4.8-302.0, P < 0.001), and NLR (cut-off = 7, OR = 22, 95% CI = 1.4-335.0, P = 0.020) as independent risk factors.