Fig. 3From: What surgical approach would provide better outcomes in children and adolescents undergoing cholecystectomy? Results of a systematic review and meta-analysisMean difference for operative time (minutes) in studies comparing laparoscopic cholecystectomy versus open cholecystectomy. Studies ordered chronologically. Positive values favour open cholecystectomy group. SD = standard deviation; N = sample size; CI = confidence interval; MD = mean differenceBack to article page