BackgroundThe children's lipid accumulation product (CLAP) was associated with MS in Chinese children and adolescents. The study was to develop a more effective indicator, relative children's lipid accumulation product (RCLAP)associated with MS reflect the density of lipid accumulation among Chinese children and adolescents. MethodsA stratified cluster sampling method was used to recruit 683 students aged 8-15 years in this study. The presence of MS was defined according to the NCEP-ATP III

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... eria. The t-test, chi-square test, logistic regression models were used to analyze the associations of SBMI, SWHtR, SlnCLAP, SRCLAP-H, SRCLAP-SH, RCLAP-W with MS. Receiver Operating Characteristic (ROC) curves was used to evaluate the predictive efficiency of above indexes for predicting MS. ResultsThe overall prevalence of MS was 4.8% (boys 6.6%, girls 2.8%). In girls, after adjusting for sedentary activity time, WHtR, BMI, CLAP, RCLAP-H, RCLAP-SH and RCLAP-W significantly increased risk of MS (OR(95%CI):15.79 (3.15-79.21), 3.73 (0.87-15.95), Null, 96.13 (11.11-831.97), 96.13 (11.11-831.97), 18.28 (4.24-78.87), respectively). In boys, after adjusting for ages and moderate-to-vigorous physical activity time, WHtR, BMI, CLAP, RCLAP-H, RCLAP-SH and SRCLAP-W significantly increased risk of MS (OR(95%CI): 37.43(11.67-120.10), 68.33(18.51-252.20), 105.86(21.99-509.68), 171.75(33.60-878.00), 133.18(27.65-641.39), 50.13(15.48-162.37, respectively). The AUCs of RCLAP-H and RCLAP-SH for predicting MS were 0.950, 0.948 in girls, and 0.952, 0.952 in boys, which were higher than these of BMI, WHtR, CLAP and RCLAP-W.ConclusionThe relative children,s lipid accumulation products(RCLAP-H and RCLAP-SH ) were more effective indicators for predicting MS than BMI, WHtR and CLAP in Chinese children and adolescents.