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[Factors related to serum lipid levels in women of middle and old age--a community study].

Serum lipid levels of 168 women ranging in age from 30 to 69 were measured at a mass health screening in an urban community in Saitama prefecture. Degree of obesity, skinfold thickness and blood pressure were measured and the relation between these physical measurements to serum lipid levels was studied. The results are as follows: (1) Mean total cholesterol level, degree of obesity, systolic blood pressure and diastolic blood pressure increased linearly with advancing age. (2) Simple correlation analysis disclosed that the level of total cholesterol was positively correlated to age, degree of obesity, systolic blood pressure and triglyceride level. HDL-cholesterol level showed a significantly negative correlation to degree of obesity, skinfold thickness and triglyceride level. Degree of obesity was positively correlated to skinfold thickness, systolic blood pressure, diastolic blood pressure, total cholesterol and triglyceride level, but was negatively correlated to HDL-cholesterol. Systolic blood pressure had a positive correlation with age, degree of obesity, diastolic blood pressure, total cholesterol and triglyceride level. (3) Principal component analysis, when performed with the variables age, degree of obesity, skinfold thickness, systolic blood pressure, diastolic blood pressure, level of total cholesterol, triglyceride and HDL-cholesterol, showed that subjects could be divided into the group having obesity with low HDL-cholesterol (first principal component), the hypertensive group (second principal component), and the group having hyperlipidemia with advancing age (third principal component). (4) Multiple regression analysis was also carried out, taking HDL-cholesterol level as the dependent variable, and age, degree of obesity, systolic blood pressure, total cholesterol and triglyceride level as independent variables. Degree of obesity and triglyceride level were negatively related to HDL-cholesterol.