Department of Social medicine, School of Public Health, China Medical University, Shenyang, Liaoning, China.
Curriculum and teaching research office, Research Center of Medical Education, China Medical University, Shenyang, Liaoning, China.
BMC Pediatr. 2019 Jun 8;19(1):184. doi: 10.1186/s12887-019-1557-9.
Television (TV) viewing may affect children's obesity status. In the present study the association between TV viewing and early childhood overweight/obese status was investigated as well as the association based on age difference.
The present study included 933 children 1-5 years of age that were individually matched on a 1:2 (cases: controls) ratio based on age and community. Cochran-Mantel-Haenszel test was used to evaluate the association between TV viewing time and the related unhealthy behaviors. Conditional logistic regression models were used to quantify the association between TV viewing and children overweight/obese status in two age groups. The effects of TV viewing-related behaviors on the associations were further investigated.
TV viewing time > 1 h was positively associated with the prevalence of TV viewing-related unhealthy behaviors (P < 0.05). After controlling for these behaviors, the association between TV viewing and childhood overweight/obese status was significant among 4- to 5-year-old children (odds ratio, OR = 1.72, 95% confidence interval, CI: 1.16--2.54), but not significant among 1- to 3-year-old children.
Childhood overweight/obese status was positively associated with longer TV viewing time only among 4- to 5-year-old children. The results from the present study may help in identifying the population susceptible for overweight and obesity caused by TV viewing.
看电视可能会影响儿童的肥胖状况。本研究旨在调查儿童看电视时间与幼儿超重/肥胖状况之间的关系，以及基于年龄差异的关系。
本研究纳入了 933 名 1-5 岁的儿童，按照年龄和社区以 1:2（病例：对照）的比例进行个体匹配。采用 Cochran-Mantel-Haenszel 检验评估看电视时间与相关不良行为之间的关系。采用条件 logistic 回归模型分别在两个年龄组中量化看电视与儿童超重/肥胖状况之间的关系。进一步探讨了与看电视相关的行为对这些关联的影响。
看电视时间>1 小时与看电视相关不良行为的患病率呈正相关（P<0.05）。在控制这些行为后，看电视与 4-5 岁儿童超重/肥胖状况之间存在显著关联（比值比，OR=1.72，95%置信区间，CI：1.16-2.54），但在 1-3 岁儿童中不显著。
仅在 4-5 岁儿童中，儿童超重/肥胖状况与较长的看电视时间呈正相关。本研究的结果可能有助于识别因看电视而导致超重和肥胖的易感人群。
