出生体重与儿童体质指数、腰围身高比关系

目的 以儿童体质指数(body mass index,BMI)作为第一种肥胖(obesity-1)筛查指标,以腰围身高比(waist-to-height ratio,WHtR)作为第二种肥胖(obesity-2)筛查指标,分析出生体重与两种肥胖相关性。方法 选择上海市3所初中和3所小学3 960名7~18岁在校学生。遵循自愿原则,对所有合格入组学生(共3 687名)进行体格检查,并对学生监护人进行问卷调查。结果 Logistic二元回归分析结果显示,在出生体重≥2 500 g的儿童中,出生体重每增加1 000 g,其儿童期发生obesity-1的危险性增加1.3倍(OR=1.32,95%CI:1.1~1.59,P=0.003);发生obesity-2危险性增加1.22倍(OR=1.22,95%CI:1.0~1.47,P=0.041)。 结论 在出生体重≥2 500 g的儿童中,出生体重增加,发生两种肥胖危险性均增加。

Relationship between birth weight and body mass index,waist-to-height ratio.

Objective BMI was used for assessing the first kind of obesity(obesity-1).And WHtR was used for assessing the second kind of obesity(obesity-2).Two kinds of obesity were assessed with birth weight respectively. Methods 3 960 students(7~18 years old) were chosen from three primary schools and three middle schools in Shanghai China.According to the accuracy of birth weight data and exclusion criteria,3 687 students were eligible ultimately.Physical examination of height,weight and waist circumference were carried out by trained physicians.Questionnaire of birth weight were completed by students' guardian according to the birth certificate. Results In the group of birth weight ≥2 500 g,birth weight was associated with the risk of childhood obesity-1 significantly(OR=1.32,95%CI:1.1~1.59,P=0.003);risk of developing obesity-2 was increased with birth wight(OR=1.22,95%CI:1.0~1.47,P=0.041). Conclusions Birth weight is the risk factor for childhood obesity-1 and obesity 2 among children who birth weight≥2 500 g.