Reference percentiles for evaluating phase angle using bioelectrical impedance analysis in Chinese children aged 6-11 years.

ABSTRACT:

Background

Bioelectrical impedance analysis (BIA)-derived phase angle (PhA) is influenced by multiple factors including age, sex, ethnicity, and growth status. However, reference ranges for PhA in Chinese children remain undefined. This study was designed to establish normative PhA values in Chinese school-aged children, with the goal of providing clinicians with more accurate nutrition assessments.

Methods

A retrospective analysis was performed. Primary diagnosis reports were gathered from the hospital information system (HIS). The data were stratified by age and sex, with 95% confidence intervals (CIs) calculated for each demographic subgroup. Age- and sex-specific percentile curves were subsequently generated. A multivariable linear regression model was employed to examin

SUBMITTER: Yang J 

PROVIDER: S-EPMC12350123 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature