percentile of serum lipid profile in children and adolescents of birjand, eastern iran.

abstract:introduction: racial and environmental differences in communities leading cause of differences in serum lipids. it can be said this study aimed in assessing percentile curves of serum lipid profile about 6-18 years old students of birjand.method: the present cross-sectional study was done on 4168 students of birjand aged 6-18 years. they were classified into three age groups 6-10 and 15-18 and 11-14 years. the 5th, 10th, 25th, 50th, 75th, 90th, and 95th percentiles of lipids (cholesterol, ldl, hdl and triglycerides) were determined by sex for different age groups.result: the 5th, 10th, 25th, 50th, 75th, 90th and 95th percentiles for cholesterol, ldl, hdl, and tg were 114,123, 138, 157, 176, 197, 210; 54, 59, 71, 86, 102, 119, 131; 33, 36, 41, 48, 56, 64, 68 and 43, 49, 61, 78, 103, 138, 164, respectively. conclusion: percentiles of lipid in kids of birjand are different in comparison with reference percentiles of the u.s and also tehran. triglycerides and hdl in children and adolescents of birjand were higher and lower, respectively than the americans. this could be due to racial differences and environmental factors such as nutrition and sedentary life style. this should be considered in interpretation of normal and abnormal values and determination of dyslipidemia in children and adolescents. take the regional percentiles of serum lipids for iranian children and adolescents recommended by examining a sufficient number of samples.