| Young Su Ju | 2 Articles |
Background: Childhood obesity is becoming more prevalent, associated with a variety of adverse consequences which leads to adulthood obesity. Although diagnosis is usually made by body mass index, there is neither a cutoff point for the percentage body fat nor abdominal circumference. The aim of this study was to identify each cutoff point for both measures. Methods: The measurement of height, weight, abdominal circumference and percentage body fat was performed through manual assessment and bioelectrical impedance analysis for 4,242 subjects aged 11 in Gunpo City, South Korea. The cutoff point for body fat percentage and abdominal circumference is set to maximize the sum of sensitivity and specificity for detecting obesity and overweight using the Receiver Operating Characteristics (ROC) curve. Results: The mean percentage body fat was 13.6±6.9% for boys and 19.4±5.3% for girls. The mean abdominal circumference of boys was 68.0±9.1 cm, and that of girls was 64.3±7.7 cm. The cutoff point of percentage body fat for obesity was 21.8% in boys and 24.5% in girls. The prevalence of obesity was 15.2%, 16.7% for males and females, respectively. The abdominal circumference cutoff for obesity was 76.9 cm in boys and 70.7cm in girls. Based on that, the prevalence of obesity was 19.7% for boys and 20.0% for girls, which was higher than what was identified by body mass index, as in the case of body fat percentage. Conclusion: The cutoffs of body fat percentage and abdominal circumference in one city of Gyeonggi Province were lower than those suggested in the previous studies. (J Korean Acad Fam Med 2008;29:492-498)
Background
: Erectile dysfunction (ED) has been presented as a predictor of cardiovascular diseases. Earlier studies had revealed risk factors for erectile dysfunction, but the results are variable. We conducted this study to evaluate the association between various factors and ED. Methods : The subjects were 403 men, over 20 years old, who visited a university hospital health promotion center from February to May 2003. They responded to 'the Korean version of 5-item International Index of Erectile Function (IIEF-5)'. The subjects were divided into ED group and normal group according to 'IIEF-5' score. We studied the association between ED and sociodemographic factors, smoking, exercise, depression, diabetes, hypertension, dyslipidemia and analysed stress and job stress in a subgroup who responded to the questionnaires. Results : The mean age of subjects was 45.6±8.9 and 34.2% of the subjects had ED. The risk of ED increased 1.09 times per year (P＜0.01). Statistically significant association between ED and education level, income, occupation, smoking (P＜0.01), DM, and exercise (P＜0.05) was shown by univariate analysis, but not by multivariate analysis. By multivariate analysis, the risk of ED increased significantly in older age, lower educational group and severe depression (P＜0.01). Among 251 subjects who completed the Psychiatric Wellbeing Inventory- Short form, high risk of stress group wsa associated with high risk of ED by univariate analysis (P＜0.01) but this association did not exist in multivariate analysis. We could not find the association between ED and job stress. Conclusion : The prevalence of ED was 34.2% among the subjects over 20 year-old and the risk of ED increased significantly in older age, lower educational group, and in subjects who had moderate to severe depression.
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