Abstract：
PURPOSE:To assess the relationships between lipid levels and sexual maturity, independently of age-related differences, and to investigate possible differences related to sexual maturity across the percentiles of the lipid distributions. METHODS:Fasting serum total cholesterol and triglyceride concentrations were measured in 6577 boys and 6605 girls, aged from 10 to 13 years, with different Tanner stages. The total cholesterol and triglyceride mean and percentile levels were estimated according to age and Tanner stage by ordinary least squares and percentile regression models, separately in both sexes. RESULTS:In boys and girls, total cholesterol levels were significantly associated with pubertal stage after controlling for age. At age 12, the estimated mean levels in boys varied from 4.82 mmol/L for Tanner 1 to 4.41 for Tanner 5. The corresponding values were 5.05 and 4.62 mmol/L in girls, for whom the association with maturity was stronger in the upper than in the lower percentiles (p < 0.0001); between the extreme Tanner stages, the 95th percentiles of total cholesterol differed by 0.80 mmol/L, in comparison to 0.19 mmol/L for the 5th percentiles. Therefore, 1. 8% of girls and 0.7% of boys were classified differently whether Tanner stage was used or not to assess hypercholesterolemia (concentrations in the upper 5% of the distributions). Triglycerides were positively related to sexual maturity independently of age, but the discrepancies between classifications were lower; 1.1% in girls and 0.4% in boys. CONCLUSIONS:Our findings emphasize the importance of sexual maturity, even for a given age, for interpreting lipid levels in children.
journal_name
Ann Epidemioljournal_title
Annals of epidemiologyauthors
Bertrais S,Balkau B,Charles MA,Vol S,Calvet C,Tichet J,Eschwege Edoi
10.1016/s1047-2797(00)00056-9keywords:
subject
Has Abstractpub_date
2000-07-01 00:00:00pages
316-23issue
5eissn
1047-2797issn
1873-2585pii
S1047-2797(00)00056-9journal_volume
10pub_type
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