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Table 1 Basic information for studies included in the meta-analysis

From: RETRACTED ARTICLE: Meta-analysis of the efficacy of pancreatoduodenectomy with extended lymphadenectomy in the treatment of pancreatic cancer

Authors Research time Country Average age (PD/ELND versus PD) Male/Female (PD/ELND versus PD) Number of cases (PD/ELND versus PD) Indicators
Pedrazzoli et al. [10] 3/1991 to 3/1994 Italy 59.2/62 25/16 41/40 operative time, postoperative hospital stay, amount of blood transfusions, incidence of postoperative complications, mortality, 4-year survival rate
27/13
Farnell et al. [11] 5/1997 to 7/2003 U.S. 67/66 18/21 39/40 operative time, postoperative hospital stay, incidence of postoperative complications, mortality, 1-, 3-, and 5-year survival rate,
20/20
Yeo et al. [12, 13] 4/1996 to 6/2001 U.S. 65.2/66.2 76/72 148/146 operative time, postoperative hospital stay, amount of blood transfusions, incidence of postoperative complications, mortality, 1-, 3-, and 5-year survival rate
85/61
Nimura et al. [14] 2000.3 to 2003.5 Japan 61/62 25/26 51/50 operative time, postoperative hospital stay, amount of blood transfusions, incidence of postoperative complications, mortality, 1-, 3-, and 5-year survival rate
     25/25   
  1. PD, pancreatoduodenectomy; PD/ELDN, pancreatoduodenectomy with extended lymphadenectomy.