Lumeng Julie C, Rahnama Sahand, Appugliese Danielle, Kaciroti Niko, Bradley Robert H
Center for Human Growth and Development and Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI 48109-0406, USA.
Arch Pediatr Adolesc Med. 2006 Apr;160(4):417-22. doi: 10.1001/archpedi.160.4.417.
To test the independent effect of television exposure in preschool-aged children on overweight risk.
Cross-sectional and longitudinal analysis of the National Institute of Child Health and Human Development Study of Early Child Care and Youth Development.
Ten US sites.
One thousand sixteen children selected via conditional random sampling.
Being awake in the room with the television on for 2 hours or more per day, by maternal report at age 36 months.
Child overweight (body mass index [calculated as weight in kilograms divided by the square of height in meters] > or =95th percentile) calculated from measured anthropometrics at ages 36 and 54 months. Covariates tested included child sex and race; maternal marital status, education, age, and depressive symptoms; income-needs ratio, child behavior problems; Home Observation for Measurement of the Environment total score; hours per week in nonparental care; and proportion of television exposure that was educational.
At age 36 months, 5.8% of children were overweight; at age 54 months, 10.0% were overweight. Exposure to 2 or more hours of television per day was associated with an increased risk of overweight at both age 36 months (odds ratio, 2.92; 95% confidence interval, 1.36-6.24) and age 54 months (odds ratio, 1.71; 95% confidence interval, 1.03-2.83) in unadjusted analyses. Only maternal age altered the concurrent relationship, and the effect of television remained significant (odds ratio, 2.61; 95% confidence interval, 1.21-5.62). Television exposure at age 36 months was no longer a significant predictor of overweight at age 54 months when controlling for covariates.
Excessive television exposure is a risk factor for overweight in preschoolers independent of a number of potential confounders associated with the quality of the home environment.
检验学龄前儿童看电视对超重风险的独立影响。
对国家儿童健康与人类发展研究所的早期儿童保育与青年发展研究进行横断面和纵向分析。
美国十个地点。
通过条件随机抽样选取的1016名儿童。
根据母亲报告，36个月大时每天在开着电视的房间里醒着2小时或更长时间。
根据36个月和54个月时测量的人体测量数据计算儿童超重情况（体重指数[计算方法为体重（千克）除以身高（米）的平方]≥第95百分位数）。检验的协变量包括儿童性别和种族；母亲的婚姻状况、教育程度、年龄和抑郁症状；收入需求比、儿童行为问题；家庭环境观察量表总分；每周在非父母照料下的时长；以及教育性电视节目的观看比例。
36个月大时，5.8%的儿童超重；54个月大时，10.0%的儿童超重。在未调整分析中，每天看电视2小时或更长时间与36个月大（优势比，2.92；95%置信区间，1.36 - 6.24）和54个月大（优势比，1.71；95%置信区间，1.03 - 2.83）时超重风险增加相关。只有母亲年龄改变了这种同时存在的关系，看电视的影响仍然显著（优势比，2.61；95%置信区间，1.21 - 5.62）。在控制协变量时，36个月大时看电视不再是54个月大时超重的显著预测因素。
过度看电视是学龄前儿童超重的一个风险因素，独立于许多与家庭环境质量相关的潜在混杂因素。
