Kinge Jonas Minet
Norwegian Institute of Public Health, Pb 4404 Nydalen, 0403, Oslo, Norway.
Department of Health Management and Health Economics, University of Oslo, Oslo, Norway.
Health Econ Rev. 2017 Dec;7(1):18. doi: 10.1186/s13561-017-0154-6. Epub 2017 May 15.
There is evidence to suggest that high birth weight increases subsequent BMI. However, little attention has been paid to variations in this impact between population groups. This study investigates the relationship between high birth weight and subsequent obesity, and whether or not this relationship varies by household income. Data was taken from fourteen rounds of the Health Survey for England (between 2000-2014; N = 31,043) for children aged 2-16. We regressed obesity in childhood against birth weight, accounting for interactions between birth weight and household income, using sibling-fixed effects models. High birth weight was associated with increased risk of subsequent obesity. This association was significantly more pronounced in children from low-income families, compared with children from high-income families. A 1 kg increase in birth weight increased the probability of obesity by 7% in the lowest income tertile and 4% in the highest income tertile. This suggests that early socioeconomic deprivation compound the effect of high birth weight on obesity.
有证据表明，出生体重高会增加后续的体重指数（BMI）。然而，不同人群组之间这种影响的差异很少受到关注。本研究调查了高出生体重与后续肥胖之间的关系，以及这种关系是否因家庭收入而异。数据取自英格兰健康调查的十四轮调查（2000年至2014年期间；N = 31,043），对象为2至16岁的儿童。我们使用兄弟姐妹固定效应模型，将儿童期肥胖与出生体重进行回归分析，并考虑出生体重与家庭收入之间的相互作用。高出生体重与后续肥胖风险增加有关。与高收入家庭的儿童相比，这种关联在低收入家庭的儿童中明显更为显著。出生体重每增加1千克，最低收入三分位数组的肥胖概率增加7%，最高收入三分位数组增加4%。这表明早期的社会经济剥夺会加剧高出生体重对肥胖的影响。
