Brief Article
Copyright ©2012 Baishideng Publishing Group Co.
World J Gastroenterol. Jun 7, 2012; 18(21): 2712-2718
Published online Jun 7, 2012. doi: 10.3748/wjg.v18.i21.2712
Figure 1
Figure 1 Begg’s funnel plot of publication bias.
Figure 2
Figure 2 Selection of the studies.
Figure 3
Figure 3 Analysis of status of the phosphatase and tensin homolog homolog. A: Analysis of status of the phosphatase and tensin homolog (PTEN) homolog and objective response; B: Analysis of status of the PTEN homolog and survival; C: Combined analysis of the PTEN homolog and Kirsten rat sarcoma 2 viral oncogene homolog (KRAS) status and survival. RR: Risk ratio; CI: Confidence interval; HR: Hazard ratio; OS: Overall survival; PFS: Progression-free survival.