CONDUCT FOCUS GROUPS AND INTERVIEWS TO INFORM NEXT SURVEY DEVELOPMENT

预防研究分支（PRB）是尤尼斯·肯尼迪·施莱佛国家儿童健康和人类发展研究所（NICHD）的一个内部研究小组，正在进行学龄儿童健康行为研究的纵向组成部分。这项纵向研究被称为“下一步”。NEXT研究收集有关青少年健康状况和健康行为的信息。在HBSC纵向研究中，招募了约2，800名美国10年级学生的全国代表性队列。对非裔美国青年进行过采样，以提供更好的人口估计，并提供足够的样本来检查健康，健康行为和健康行为变化的纵向预测因素的种族/民族差异。健康状况、健康行为和健康态度的自我报告通过在校和在线调查收集。还收集了所有NEXT参与者的人体测量和邻里数据。 一个子样本，NEXT Plus包括从NEXT队列招募的约275名正常体重和275名超重或肥胖参与者。使用NEXT Plus子样本进行的其他评估包括：身体活动、久坐行为和睡眠的客观评估;生物和遗传标记，包括肥胖、心血管疾病和代谢综合征的生物和遗传标记。此外，我们将跟踪空腹血糖，HbA 1c，总胆固醇，甘油三酯，LDL-C，HDL，C-反应蛋白，尿酸，可替宁，身高，体重，腰围<$多达四个额外的评估驾驶性能的NEXT Plus参与者使用仪器的汽车;

The Prevention Research Branch (PRB), an intramural research group of the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) is conducting a longitudinal component of the ¿Health Behavior in School-Ages Children (HBSC)¿ study. This longitudinal study is called ¿NEXT¿. The NEXT study collects information on adolescent health status and health behaviors. A nationally-representative cohort of approximately 2,800 U.S. 10TH grade students was recruited academic years under the HBSC longitudinal study. African-American youth were oversampled to provide better population estimates and to provide an adequate sample to examine racial/ethnic differences in longitudinal predictors of health, health behaviors, and health behavior change. Self-report of health status, health behaviors, and health attitudes are collected by in-school and online surveys. Anthropometric and neighborhood data are also collected for all NEXT participants. A subsample called ¿NEXT Plus¿ includes approximately 275 normal weight and 275 overweight or obese participants who were recruited from the NEXT cohort. The additional assessments performed with the NEXT Plus subsample include: objective assessment of physical activity, sedentary behavior, and sleep; biological and genetic markers including those for obesity, cardiovascular disease, and metabolic syndromes. In addition, we will be tracking fasting blood glucose, HbA1c, total cholesterol, triglycerides, LDL-C, HDL, C-reactive protein, uric acid, cotinine, height, weight, waist ¿ Up to four additional assessments of driving performance of NEXT Plus participants using instrumentation of their cars;