NPPB and pulmonary hypertension, primary, 1: β0/β0 thalassemia (OR = 0.005, p = 0.002)], presence of EMH (OR 20.549, p = 0.016), presence of PHT (OR 25.455, p = 0.016), elevated serum NT-proBNP (OR 1.028, p = 0.022) and elevated 24-h urine magnesium (OR 1.913, p = 0.016) as shown in Table 5.