Letters To The Editor
Copyright ©2010 Baishideng.
World J Gastroenterol. Feb 14, 2010; 16(6): 785-786
Published online Feb 14, 2010. doi: 10.3748/wjg.v16.i6.785
Figure 1
Figure 1 Funnel plot. A: Log odds ratio vs standard error; B: Log odds ratio vs precision (Precision = 1/standard error).