Body mass index as a marker of dyslipidemia in children

Area of Science:

• Pediatric Endocrinology
• Public Health Nutrition
• Clinical Diagnostics

Background:

• Obesity is a prevalent condition frequently linked with metabolic disorders like dyslipidemia and diabetes.
• Early identification of dyslipidemia in children is crucial for preventing long-term cardiovascular complications.

Purpose of the Study:

• To evaluate the diagnostic accuracy of International Obesity Task Force (IOTF) and Conde & Monteiro (C&M) Body Mass Index (BMI) cut-offs for dyslipidemia screening in 10-12-year-old children.
• To compare the sensitivity and specificity of IOTF and C&M criteria in identifying pediatric dyslipidemia.

Main Methods:

• A cross-sectional study involving 374 children aged 10-12 years from Santa Maria-RS.
• Body Mass Index (BMI) was calculated, and lipid profiles (Total Cholesterol, LDL-C, HDL-C, Triglycerides) were analyzed.
• IOTF and C&M BMI cut-offs were applied to classify children, followed by sensitivity and specificity analyses for dyslipidemia detection.

Main Results:

• Prevalence of excess weight differed between IOTF (24.7%) and C&M (28.6%) criteria.
• Sensitivity for dyslipidemia detection varied from 33% to 83%, and specificity ranged from 62% to 80% across the different cut-offs.
• The proportion of false negatives was lower than false positives for both screening methods.

Conclusions:

• Both IOTF and C&M criteria demonstrate utility in screening for elevated Total Cholesterol (TC) and LDL-C in male children.
• The high specificity of both IOTF and C&M classifications makes them suitable for identifying children without dyslipidemia.