Meta-Analysis
Copyright ©2013 Baishideng Publishing Group Co.
World J Meta-Anal. Nov 26, 2013; 1(3): 102-120
Published online Nov 26, 2013. doi: 10.13105/wjma.v1.i3.102
Figure 6
Figure 6 Frequency of study quality based on six different types of potential bias. Low quality: 0%-50% quality items within category not present; Moderate quality: 51%-75% items not present; High quality: 76%-100% items present.