Meta-Analysis
Copyright ©2014 Baishideng Publishing Group Co.
World J Gastroenterol. Feb 21, 2014; 20(7): 1858-1870
Published online Feb 21, 2014. doi: 10.3748/wjg.v20.i7.1858
Figure 3
Figure 3 Funnel plot of observed relative risk against standard error (as a surrogate of study size) for all studies analyzed. RCT: Randomized controlled trials.