© 1981 Oxford University Press
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Serum Lipids in a Teenage Population: Geographic, Seasonal and Familial Factor



* British Heart Foundation Junior Research Fellow, Department of Medicine, University Hospital, Queens Medical Centre, Nottingham NG7 2UH Present Address: Department of Epidemiology Graduate School of Public Health, Desoto Street, University of Pittsburgh, PA 15261, USA
** Department of Clinical Biochemistry, University Hospital, Queens Medical Centre Nottingham NG7 2UH
Department of Community Health, Medical School, Queens Medical Centre Nottingham NG7 2UH

Department of Medicine, University Hospital, Queens Medical Centre Nottingham NG7 2UH
The lipid results of a crosssectional study of cardiovascular disease risk factors in over 600 1318 year olds drawn from general practices in contrasting areas are reported. Differences were noted between the 3 practices, including a significant variation in the blood group distribution. HDL cholesterol showed a marked variation between the 3 practices which was unlikely to be due solely to seasonal variation. Alcohol consumption though not an univariate correlate of HDL cholesterol was however a strong partial correlate, as were age, height, sexual maturation, adiposity and smoking. Using 6 factors in each sex, 13% of the interchild variance of HDL cholesterol in boys could be explained in a multiple linear regression analysis, and 8% in girls. Including the practice variation as a further independent variable increased the explanation to 18% in boys and 15% in girls. An intraclass correlation (sib-sib) of 0.36 was found for HDL cholesterol, suggesting a strong familial influence. The Implications of these results are discussed, along with the difficulties of screening for hyperlipidaemia in this age group.
Received 26 November 1980
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