Mongan Institute for Health Policy, Massachusetts General Hospital, Division of General Academic Pediatrics, MassGeneral Hospital for Children, and Harvard Medical School, Boston, Massachusetts; National Bureau of Economic Research, Boston, Massachusetts.
Department of Human Ecology, Cornell University, Ithaca, New York.
Am J Prev Med. 2014 Oct;47(4):382-91. doi: 10.1016/j.amepre.2014.05.018. Epub 2014 Jul 8.
How parent and sibling obesity status comparatively shape a child's obesity is unknown.
To investigate how the obesity status of different children within the same family is related to a parent or sibling's obesity.
A national sample of adults in 10,244 American households was surveyed during 2011; data were analyzed in 2012-2013. Of these households, 1,948 adults had one or two children; provided sociodemographic information; and reported on adult and child height and weight, physical activity, and food environment. Logistic regression models were estimated in which the outcome of interest was child obesity status, with parent and sibling obesity as key predictors, adjusting for a range of both adult and child social and demographic confounders.
In one-child households, it was 2.2 times more likely (SE=0.5) that the child would be obese if a parent was obese. In households with two children, having an obese younger sibling was more strongly associated with elder-child obesity (OR=5.4, SE=1.9) than parent's obesity status (OR=2.3, SE=0.8). Having an obese elder sibling was associated with younger-child obesity (OR=5.6, SE=1.9), and parent obesity status was no longer significant. Within-family sibling obesity was more strongly patterned between siblings of the same gender than between different genders, and child physical activity was significantly associated with obesity status.
Considering offspring composition and sibling gender may be beneficial in childhood obesity prevention and intervention.
父母和兄弟姐妹的肥胖状况如何相对影响孩子的肥胖情况尚不清楚。
研究同一家庭中不同孩子的肥胖状况与父母或兄弟姐妹肥胖之间的关系。
在 2011 年对 10244 户美国家庭中的成年人进行了全国性抽样调查；并于 2012-2013 年进行数据分析。在这些家庭中，1948 名成年人有一个或两个孩子；提供社会人口统计学信息；并报告成年人和儿童的身高和体重、身体活动和食物环境。使用逻辑回归模型估计了感兴趣的结果是儿童肥胖状况，父母和兄弟姐妹肥胖是关键预测因素，调整了一系列成人和儿童的社会和人口混杂因素。
在只有一个孩子的家庭中，如果父母肥胖，孩子肥胖的可能性是正常情况下的 2.2 倍（SE=0.5）。在有两个孩子的家庭中，与父母肥胖状况相比（OR=2.3，SE=0.8），肥胖的弟弟或妹妹与哥哥或姐姐肥胖的相关性更强（OR=5.4，SE=1.9）。肥胖的哥哥或姐姐与弟弟或妹妹肥胖有关（OR=5.6，SE=1.9），而父母肥胖状况不再显著。同性别兄弟姐妹之间的家庭内兄弟姐妹肥胖模式比不同性别之间更为明显，儿童身体活动与肥胖状况显著相关。
考虑到子女构成和兄弟姐妹的性别可能有助于儿童肥胖的预防和干预。
