Performance of different adiposity measures for predicting left ventricular remodeling in Chinese hypertensive youth

Hong Cheng1, Bo Xi2, Junting Liu1

  • 1Department of Epidemiology, Capital Institute of Pediatrics, Beijing, 10020, China.

Scientific Reports
|November 10, 2021
PubMed

Insights

Body mass index (BMI), waist circumference (WC), and waist-to-height ratio (WHtR) similarly predict cardiovascular risk in Chinese youth. While WHtR is convenient for screening, all measures show limited predictive value for left ventricular abnormalities.

Area of Science:

  • Cardiovascular Health
  • Pediatric Cardiology
  • Obesity Research

Background:

  • Identifying optimal adiposity measures for predicting cardiovascular risk in youth remains challenging.
  • Abnormal left ventricular structure is a key indicator of cardiovascular risk in hypertensive adolescents.

Purpose of the Study:

  • To evaluate the predictive performance of body mass index (BMI), waist circumference (WC), and waist-to-height ratio (WHtR) for abnormal left ventricular structure in Chinese hypertensive youth.
  • To compare the efficacy of these adiposity indices in identifying left ventricular hypertrophy (LVH) and left ventricular geometry (LVG).

Main Methods:

  • Utilized data from the China Child and Adolescent Cardiovascular Health Study, including 1180 hypertensive youth aged 6-17 years.
  • Employed logistic regression, receiver operator characteristic (ROC) curve analysis, and net reclassification improvement (NRI) to assess predictive performance.
  • Analyzed the association between a 1-standard deviation increment in BMI, WC, and WHtR and the likelihood of LVH and LVG.

Main Results:

  • All three adiposity indices (BMI, WC, WHtR) demonstrated similar performance in predicting LVH and LVG.
  • Odds ratios for predicting LVH/LVG per 1-SD increment were comparable across the indices: BMI 1.34 (1.16-1.55), WC 1.25 (1.08-1.45), and WHtR 1.40 (1.20-1.62).
  • ROC analysis and NRI confirmed the comparable predictive capabilities of BMI, WC, and WHtR, though their overall predictive value was limited.

Conclusions:

  • BMI, WC, and WHtR exhibit similar, albeit limited, predictive value for abnormal left ventricular structure in Chinese hypertensive youth.
  • Waist-to-height ratio (WHtR) is recommended as a simple and convenient screening tool for identifying youth at high risk of target organ damage.
  • Further research may be needed to identify more robust predictors of cardiovascular risk in this population.