Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA.
Med Princ Pract. 2010;19(4):269-74. doi: 10.1159/000312712. Epub 2010 May 26.
To ascertain abdominal obesity prevalence (waist circumference, WC) in adolescents and to develop smoothed WC percentile charts for Kuwaiti adolescents for public health use.
A cross-sectional study of 4,219 healthy Kuwaiti male and female secondary school students between the ages of 11-19 years was examined. Adolescents were drawn from all geographical regions of the country, as part of the Kuwait Nutrition Surveillance Program (KNSP). The KNSP consists of yearly data collections of variables, including weights, heights, and WCs and several sociodemographic variables. LMS regression was used to develop smoothed WC percentile curves. The final percentile curves presented are the result of smoothing three age-specific curves, termed lambda (L), mu (M), and sigma (S) for each gender.
Between 5.9 and 12.8% of females and 8.0-30.3% males had WC values > or = 90th percentile. Moreover, the mean WC of males was consistently higher than those of females at each age and the percent of adolescents who exceed the 90th percentile increased with age in males, but not in females.
Mean WC was higher in males than in females at every age. In most cases, two to three times greater percentages of males, compared to females, equaled or exceeded the 90th percentile, a value frequently associated with higher cardiovascular risk. These results indicate the urgent need to reduce abdominal obesity, an important indicator of the metabolic syndrome, in Kuwaiti adolescents.
确定青少年腹部肥胖（腰围，WC）的患病率，并为科威特青少年制定公共卫生用 WC 百分位曲线。
对年龄在 11-19 岁之间的 4219 名健康科威特男女中学生进行了横断面研究。这些青少年是从该国所有地理区域抽取的，是科威特营养监测计划（KNSP）的一部分。KNSP 包括每年对变量（包括体重、身高和 WC）和几个社会人口变量的数据收集。使用 LMS 回归来制定平滑的 WC 百分位曲线。最终呈现的百分位曲线是对每个性别三个特定年龄的曲线（称为 lambda（L）、mu（M）和 sigma（S））进行平滑的结果。
5.9%-12.8%的女性和 8.0%-30.3%的男性的 WC 值>或=第 90 百分位。此外，男性的平均 WC 始终高于每个年龄段的女性，并且超过第 90 百分位的青少年比例随着年龄的增长而增加，但女性则没有。
在每个年龄段，男性的平均 WC 均高于女性。在大多数情况下，与女性相比，男性达到或超过第 90 百分位的比例要高出两到三倍，这是一个与更高心血管风险相关的数值。这些结果表明，迫切需要减少科威特青少年的腹部肥胖，这是代谢综合征的一个重要指标。
