They used the Nationwide Inpatient Sample 1998 to 2004 to compare postoperative mortality of pancreatic resections performed for chronic pancreatitis with those performed for malignant neoplasm.

• 他们在全国范围内1998年到2004年的入院病人收集样本，将其中因慢性胰腺炎和因恶性肿瘤接受了胰腺切除术病人的术后死亡率进行了比较。