Comparative performance of multiple novel obesity indices for MAFLD screening in Chinese children: the body roundness

Minhao Fan1, Cai Tang1, Shibo Lin2

  • 1Wuxi Key Laboratory of Genetic and Metabolic Diseases in Children, Department of Paediatrics, Wuxi Children's Hospital, Affiliated Children's Hospital of Jiangnan University, Wuxi, Jiangsu, China.

Frontiers in Medicine
|April 13, 2026
PubMed

Insights

Four novel obesity indices, including body roundness index (BRI), are linked to pediatric metabolic dysfunction-associated fatty liver disease (MAFLD). BRI shows promise as a simple, effective screening tool for early MAFLD risk identification in children.

Area of Science:

  • Pediatric Endocrinology
  • Hepatology
  • Public Health Nutrition

Background:

  • Childhood obesity rates are rising globally, leading to an increase in metabolic dysfunction-associated fatty liver disease (MAFLD).
  • Traditional obesity metrics may not fully capture the complexity of metabolic risk in children.
  • Novel obesity indices offer potential for improved risk assessment.

Purpose of the Study:

  • To investigate the association between four novel obesity indices (VAI, LAP, BRI, WWI) and pediatric MAFLD.
  • To compare the screening performance of these novel indices against traditional measures for MAFLD in children.

Main Methods:

  • Utilized data from the Wuxi (China) Children's Nutrition and Health cohort (n=1,214).
  • Employed logistic regression and restricted cubic splines (RCS) to analyze associations.
  • Used ROC curve analysis and DeLong's test to compare the predictive performance of BRI against BMI, WC, and WHtR.

Main Results:

  • All four novel obesity indices (VAI, LAP, BRI, WWI) were significantly associated with pediatric MAFLD (p < 0.001).
  • The body roundness index (BRI) demonstrated high and consistent screening performance across subgroups.
  • BRI's predictive performance was comparable to BMI and WHtR, and superior to WC in certain subgroups.

Conclusions:

  • Novel obesity indices, particularly BRI, are significantly associated with MAFLD in children.
  • BRI is a simple, reliable, and clinically useful tool for screening and early risk stratification of pediatric MAFLD.
  • These findings support the integration of BRI into routine pediatric health assessments for MAFLD risk identification.