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. 2015 Jul 15;8(7):10274–10283.

Table 1.

Main characteristics of studies included in the meta-analysis

First author Publication year Case nationality Dominant geography Sample size Mean age Malignant disease Survival analysis Source of HR Follow-up months NOS score
Higashi1 2015 Japan Asian 114 67.4 Pancreatic cancer OS Reported 40 7
Majhi 2013 USA Western 29 NA NSCLC OS SC 144 5
Khanh 2013 Japan Asian 206 NA Colorectal cancer OS/RFS Reported 144 8
Lee 2012 Korea Asian 63 66.9 Gallbladder cancer OS Reported 122 7
Higashi2 2012 Japan Asian 63 67.4 Cholangio cancer OS Reported NA 8
Hamada 2012 Japan Asian 150 64.5 OSCC OS/DFS Reported/SC 206 8
Yi Zhu 2011 China Asian 57 61.7 Pancreatic cancer OS Reported 40 7
Shanmugam 2010 England Western 132 65 Colorectal cancer OS Reported 300 8
Aloysius 2010 England Western 104 NA Periampullary cancer OS Reported 36 6
Yeh CN 2009 China Asian 51 60 Cholangio cancer OS Reported 70.1 8
Westgaard 2009 Norway Western 65 68 Pancreatic cancer OS SC 60 7
Tsutsumida 2007 Japan Asian 185 67 Lung cancer OS/RFS SC 100 7
Morrison 2007 USA Western 295 NA Endometrial cancer OS/PFS Reported NA 6
Tamada 2006 Japan Asian 70 69.2 Cholangio cancer OS Reported 100 8
Chauhan 2006 USA Western 38 NA Ovarian cancer OS SC 108 7
Saitou 2005 Japan Asian 135 65.8 Pancreatic cancer OS Reported 155 7
Weed 2004 USA Western 149 NA Upper Aerodigestive Tract cancer OS/RFS Reported 108 6
Shibahara 2004 Japan Asian 27 65.3 Cholangio cancer OS Reported 60 7

OS, overall survival; DFS, disease-free survival; RFS, recurrence-free survival; PFS,progression-free survival; NSCLC, non-small cell lung cancer; OSCC, oral squamous cell carcinoma; NA, not available; SC, survival curve.