Ranson JHC, et al. Surg Gynecol Obstet. 1974; 139:69-81 and Ranson JHC.
Am J Gastroenterol. 1982; 77:633
Interpretation: Add 1 point for each of the criteria above, if present.
Number of postive Ranson signs: mortality: < 3: 1%; 3-4: 15%; 5-6: 50%; >6: ~100%