Silveira J A C, Colugnati F A B, Poblacion A P, Taddei J A A C
Department of Pediatrics, Universidade Federal de São Paulo, São Paulo, SP, Brazil.
Pediatr Obes. 2015 Apr;10(2):91-7. doi: 10.1111/ijpo.236. Epub 2014 Jun 11.
Sugar-sweetened beverages (SSBs) and breastfeeding practices have been recognized as important factors linked to children's weight status. However, no other studies have simultaneously investigated the role of each factor on children's conditional weight gain (CWG).
To evaluate the role of exclusive breastfeeding (EB) and the SSBs consumption on CWG from birth to the survey date among Brazilian preschool children (24-59 months old).
A nationally represented cross-sectional survey with complex probability sampling (n = 2421) was conducted. The outcome variable - CWG - represents how much an individual has deviated from its expected weight gain, given his or her prior weight. The multivariate linear regression to analyse the effects of EB and the consumption of SSBs on CWG were adjusted for economic status and maternal variables.
There was a significantly protective effect of EB duration during the first year of life on CWG from birth to the survey date (-0.02 [-0.03; 0.00 95% confidence interval]); however, the SSBs intake promoted an effect on the weight gain that was 2.5-fold higher (0.05 [0.02; 0.08 95% confidence interval]) than the EB.
As hypothesized, the exposure variables acted in opposite directions, but the harmful effect of SSBs intake had greater magnitude than the beneficial effect of EB on children's CWG.
含糖饮料（SSB）和母乳喂养习惯已被视为与儿童体重状况相关的重要因素。然而，尚无其他研究同时调查每个因素对儿童条件性体重增加（CWG）的作用。
评估纯母乳喂养（EB）和饮用SSB对巴西学龄前儿童（24至59个月大）从出生到调查日期的CWG的作用。
进行了一项具有复杂概率抽样的全国代表性横断面调查（n = 2421）。结果变量——CWG——表示个体相对于其先前体重的预期体重增加偏离了多少。用于分析EB和饮用SSB对CWG影响的多元线性回归针对经济状况和母亲变量进行了调整。
出生后第一年的EB持续时间对从出生到调查日期的CWG有显著的保护作用（-0.02 [-0.03; 0.00 95%置信区间]）；然而，SSB的摄入量对体重增加的影响比EB高2.5倍（0.05 [0.02; 0.08 95%置信区间]）。
如假设的那样，暴露变量的作用方向相反，但摄入SSB的有害影响在儿童CWG方面比EB的有益影响更大。
