CRP and Hypertension: As examples, age > 75 is directly correlated with hypertension (rho = 0.24), diabetes (0.18), oncological history (0.28), A–a gradient > 50 mmHg (0.24) and PO2 < 65 mmHg (0.30); Brixia > 7 is correlated with LDH > 400 (0.39), procalcitonin > 0.20 ng/mL (0.30) and NLR > 4 (0.30); CRP > 60 is correlated with PO2 < 65 mmHg (0.46) and LDH > 400UI/L (0.44); finally, P/F < 250 correlates with A–a gradient > 50 mmHg (0.60) and with PO2 < 65 mmHg(0.26).