Effective Screening Test for Obesity in Obese Adolescents and the Correlation Among Obesity Index, Body Mass Index and Serum Lipid Profile

Sung, Tae Jung; Kim, Dal Hyun; Hong, Young Jin; Son, Byong Kwan; Chang, Kyung Ja; Park, Jun Young; Kim, Soon Ki

Abstract

PURPOSE
Every year, there is a remarkable increase in the prevalence of children with excess body fat. The aim of this study is to find a useful screening method in assessing adolescent, obesity and to specify the predictable risk factors that are related to adult cardiovascular disease according to BMI and obesity index.
METHODS
From July to November in 2001, a total of 2,814(male : female=2,011 : 803) mid to high school students who were in the obesity range according to obesity index(>20%) were evaluated according to height, weight, body mass index(BMI), obesity index, and serum lipid levels.
RESULTS
Among the obese students over 20% by obesity index, 86.6% were over the range of 95 percentile by BMI. Among students defined as obese by BMI, 21.0% of males and 21.4% of females students had hypercholesterolemia; by obesity index, the ratio was 20.7% male and 19.0% female. The frequency of hypertriglyceremia in male students was 15.0% in group I(overweight group, 85P < BMI < 95P), 23.2% in group II(obese, 95P < BMI < 97P) and 34.5% in group III(extreme obese, BMI > 97p); in female students 11.8%, 20.7% and 28.2% respectively.
CONCLUSION
In this study, using BMI alone to test the serum lipid level in adolescent obesity had a limit of 10.0-17.0% omission. Therefore using obesity index as a screening method to find the adult cardiovascular disease would rather reduce the omission rate. The risk factor of cardiovascular disease according to BMI was the increasing level of triglyceride in both male and female students. We think that using the obesity index has more rationale rather than BMI in assessing lipid profiles.