Levin Sarah, Martin Maurice W, Riner William F
Department of Epidemiology and Biostatistics, School of Public Health, University of South Carolina, Columbia, USA.
Ethn Dis. 2004 Summer;14(3):336-9.
The present study tested the hypothesis that TV viewing habits and overweight would be associated among 4-year-old children. A convenience sample of Head Start students was enrolled (N=148). Parents were asked to complete a questionnaire on their children's TV viewing habits for a typical weekday, and for Saturday and Sunday. Height and weight of the children were assessed by the authors. As BMI increased, average hours of TV viewing increased slightly. Nearly 97% of children whose BMI was greater than the 95th percentile for age and sex watched more than one hour of TV, compared with less than 80% of children below the 95th percentile (chi2=6.0, P=.01). The present study suggests that TV viewing habits relate to BMI among 4-year old children to approximately the same degree as in older cohorts.
4岁儿童的看电视习惯与超重之间存在关联。选取了一批参与“启智计划”的学生作为便利样本（N = 148）。研究要求家长填写一份关于孩子在典型工作日以及周六和周日的看电视习惯的问卷。作者对孩子们的身高和体重进行了评估。随着体重指数（BMI）的增加，平均看电视时长略有增加。BMI高于年龄和性别的第95百分位数的儿童中，近97%每天看电视超过1小时，相比之下，BMI低于第95百分位数的儿童中这一比例不到80%（卡方 = 6.0，P = 0.01）。本研究表明，4岁儿童的看电视习惯与BMI的关联程度与年龄较大的队列大致相同。
