Fig. 3From: Circulating retinol binding protein 4 levels in nonalcoholic fatty liver disease: a systematic review and meta-analysisSubgroup analysis of circulating retinol binding protein 4 (RBP4) levels in nonalcoholic fatty liver disease (NAFLD) patients compared with controls when stratified by the diagnostic methods of NAFLD. SMD, standardized mean differences; CI, confidence intervalBack to article page