Edwards Jane U, Magel Rhonda
Department of Health, Nutrition and Exercise Sciences, North Dakota State University, 351G E Morrow Lebedef Bldg, Fargo, ND 58105, USA.
J Sch Health. 2007 Sep;77(7):351-8. doi: 10.1111/j.1746-1561.2007.00219.x.
The Youth Risk Behavior Survey (YRBS) was used by a city school district (approximately 11,000 students) in the upper Midwest to monitor trends for nutrition and physical activity (PA) behaviors both within and between years and to compare with national 2003 data.
Independent random samples were obtained in 1999 (387 middle school [MS] and 931 high school [HS]), in 2001 (322 MS and 367 HS), and in 2003 (658 MS and 1026 HS). A two-sample test of proportions was used.
Within each survey year, a higher proportion of MS compared to HS reported positive behaviors with some exceptions: (1) an increased proportion of HS having daily physical education (PE) and (2) a reduced proportion of HS reporting media time. Within 2003, a lower proportion of district females compared to males (MS and HS) reported participation in many measured behaviors. District trends overtime indicated a reduced proportion: (1) drinking milk (MS and HS), (2) eating breakfast (HS), and (3) watching television (MS). Trends overtime indicated an increased proportion: (1) using computers for fun (MS and HS), (2) participating in moderate PA (MS), and (3) daily PE (HS). District HS compared to national (2003) indicated a higher proportion: (1) drinking milk, (2) getting moderate PA, and (3) taking daily PE. District HS compared to national indicated a lower proportion: (1) at risk of overweight, (2) overweight, and (3) watching television.
Analysis of district YRBS trends provides both a database for informed decisions by the school district and an assessment model for other districts.
美国中西部一个城市学区（约11,000名学生）采用青少年风险行为调查（YRBS）来监测各年份内及年份间营养和身体活动（PA）行为的趋势，并与2003年的全国数据进行比较。
在1999年（387名中学生[MS]和931名高中生[HS]）、2001年（322名MS和367名HS）以及2003年（658名MS和1026名HS）获取独立随机样本。使用两样本比例检验。
在每个调查年份内，与HS相比，MS中报告积极行为的比例更高，但有一些例外情况：（1）每天上体育课（PE）的HS学生比例增加；（2）报告媒体使用时间的HS学生比例降低。在2003年，与男性（MS和HS）相比，该学区女性报告参与多种测量行为的比例较低。该学区随时间的趋势表明比例降低的情况有：（1）喝牛奶（MS和HS）；（2）吃早餐（HS）；（3）看电视（MS）。随时间的趋势表明比例增加的情况有：（1）用电脑娱乐（MS和HS）；（2）参与中等强度PA（MS）；（3）每天上体育课（HS）。该学区的HS与全国（2003年）数据相比，比例更高的情况有：（1）喝牛奶；（2）进行中等强度PA；（3）每天上体育课。该学区的HS与全国数据相比，比例较低的情况有：（1）超重风险；（2）超重；（3）看电视。
对该学区YRBS趋势的分析为学区做出明智决策提供了数据库，也为其他学区提供了评估模型。
