CRP and pancreatitis: The Prediction Acute Pancreatitis Severity (PAPS) Score I, which excludes CRP, is calculated using the following regression equation: PAPS Score I = 1.237 + 0.144 × nonA-nonB etiology (0 = no, 1 = yes) + 0.001 × WBC1 + 0.027 × VAS0.