Fig. 3From: The association between apolipoprotein E and gallstone disease: an updated meta-analysisForest plot for meta-analysis of the association of APOE E4 with GSD risk. Each study is represented by a square whose area is proportional to the weight of the study. The overall effect from meta-analysis is represented by a diamond whose width represents the 95% CI for the estimated odds ratio (OR). GSD, gallstone disease; OR, odds ratio; CI, confidence intervalBack to article page