Kelder Steven H, Osganian Stavroula K, Feldman Henry A, Webber Larry S, Parcel Guy S, Leupker Russell V, Wu Margaret C, Nader Philip R
School of Public Health, Center for Health Promotion and Prevention Research, University of Texas Health Science Center at Houston, Houston, Texas 77030, USA.
Prev Med. 2002 Mar;34(3):324-33. doi: 10.1006/pmed.2001.0990.
The Child and Adolescent Trial for Cardiovascular Health (CATCH), a multisite field trial, tested the effectiveness of multiple interventions for cardiovascular disease risk behaviors in children in third through fifth grades. This paper reports the tracking of physiologic variables through eighth grade.
The cohort began with 5,106 third grade students from diverse ethnic backgrounds: 69% Caucasian, 14% Hispanic, 13% African American, and 4% other. Seventy-two percent of students were remeasured. Measures described are serum lipids, blood pressure, and body anthropometrics. Tracking was examined across three time points (third, fifth, and eighth grades) with a scaled Kendall concordance coefficient and percentage retention within quintiles across time.
For the overall sample, tacking was strongest for body mass index (BMI) (Kendall coefficient = 0.86) and weight (0.86), followed by skinfold thicknesses (0.72-0.78), serum lipids (0.67-0.72), and blood pressure (0.45-0.51). For BMI, 96% of students stayed within +/-1 quintile from third to fifth grades; 90% stayed within this range from third to eighth grades.
There were small but noticeable gender and ethnic differences: tracking was stronger among boys and African American students. These results demonstrate that the children's relative level of cardiovascular risk remained stable over a 6-year period.
儿童和青少年心血管健康试验（CATCH）是一项多地点现场试验，测试了针对三至五年级儿童心血管疾病风险行为的多种干预措施的有效性。本文报告了对生理变量追踪至八年级的情况。
该队列始于5106名来自不同种族背景的三年级学生：69%为白人，14%为西班牙裔，13%为非裔美国人，4%为其他种族。72%的学生接受了重新测量。所描述的测量指标包括血脂、血压和身体人体测量学指标。通过一个标度肯德尔和谐系数以及各五分位数随时间的保留百分比，在三个时间点（三年级、五年级和八年级）对追踪情况进行了检查。
对于总体样本，追踪效果在体重指数（BMI）（肯德尔系数 = 0.86）和体重（0.86）方面最强，其次是皮褶厚度（0.72 - 0.78）、血脂（0.67 - 0.72）和血压（0.45 - 0.51）。对于BMI，96%的学生在三年级到五年级期间保持在±1个五分位数范围内；90%的学生在三年级到八年级期间保持在这个范围内。
存在虽小但明显的性别和种族差异：男孩和非裔美国学生的追踪效果更强。这些结果表明，儿童心血管风险的相对水平在6年期间保持稳定。
