Hendrix Kristin S, Carroll Aaron E, Downs Stephen M
1Children's Health Services Research, Indiana University School of Medicine, Indianapolis, IN, USA.
Clin Pediatr (Phila). 2014 Jun;53(6):593-600. doi: 10.1177/0009922814526973. Epub 2014 Mar 14.
To measure the relationship between screen exposure and obesity in a large, urban sample of children and to examine whether the relationship is moderated by sociodemographics.
We asked parents of 11 141 children visiting general pediatrics clinics if the child had a television (TV) in the bedroom and/or watched more than 2 hours of TV/computer daily. We measured children's height and weight, then used logistic regression to determine whether screen exposure indicators predicted obesity (body mass index ≥ 85th percentile) and interacted with race/ethnicity, sex, age, and health care payer.
Having a TV in the bedroom predicted obesity risk (P = .01); however, watching TV/computer for more than 2 hours a day did not (P = 0.54). There were no interactions.
Asking whether a child has a TV in the bedroom may be more important than asking about duration of screen exposure to predict risk for obesity.
在一个大型城市儿童样本中测量屏幕暴露与肥胖之间的关系，并检验这种关系是否受社会人口统计学因素的调节。
我们询问了11141名前往普通儿科诊所就诊儿童的家长，孩子是否在卧室里有电视和/或每天看电视/使用电脑超过2小时。我们测量了儿童的身高和体重，然后使用逻辑回归来确定屏幕暴露指标是否能预测肥胖（体重指数≥第85百分位数），以及是否与种族/民族、性别、年龄和医疗保健支付方存在交互作用。
卧室里有电视可预测肥胖风险（P = 0.01）；然而，每天看电视/使用电脑超过2小时则不能（P = 0.54）。不存在交互作用。
在预测肥胖风险方面，询问孩子卧室里是否有电视可能比询问屏幕暴露时长更为重要。
