Objectives: This study aimed to evaluate the relationship between parental body weight and their children's overweight and obesity in school students in Gao Hang Town, Shanghai.
Methods: A cross-sectional study was performed in five primary schools in Gao Hang Town, Shanghai. Overall, 2,025 sets of parents and their children (7-13 years, 981 boys/1044 girls) were enrolled. Body mass index (BMI) and waist circumference for each child were measured. Age, gender, birth weight, and breastfeeding history was recorded for each child and the BMI of their parents was obtained by a self-completion questionnaire. Overweight (including obesity) was defined as a BMI of >=24.0 kg/m2 in parents and a BMI >=P85 in children according to age- and gender-specific percentiles. Re-sults: The total prevalence of overweight was higher in boys than in girls (35.5% vs 19.5%), while it was the same in fathers compared with mothers (50.6% vs 18.9%). The prevalence of overweight in boys showed a trend with increasing age, but remained stable versus age in girls. Parents were further divided into four subgroups as follows: I) both father and mother had a normal BMI; II) father overweight, mother normal weight; III) father normal weight, mother overweight; IV) both father and mother are overweight. The odds ratio of overweight was 2.26 for group II, 2.71 for group III, and 4.36 for group IV, respectively, compared with group I. Gender, paternal BMI, and maternal BMI were chosen as risk factors for children overweight.
Conclusions: Parental BMI affects their offspring overweight and obesity in Chinese school students.
目的：以上海市高行镇在校学生为研究对象，观察父母体重与儿童超重和肥胖之间的关系。方法：采用横断面研究方法对上海市高行镇5所小学学生进行调查。总共2025名在校学生（7-13岁,男生981/女生1044）和他们的父母纳入本研究。每位学生均测量身高、体重和腰围。学生年龄、性别、出生体重、母乳喂养史和父母身高、体重由调查问卷获得。体质指数（Body mass index，BMI）=体重（kg）/身高（m）2。父母超重（包括肥胖）的诊断标准为：BMI >=24.0 kg/m2；小学生超重（包括肥胖）的诊断标准则为：BMI>=同龄同性别第85百分位值。结果：男生超重发生率明显高于女生（35.5% vs 19.5%）。与之相类似，父亲超重发生率也明显高于母亲（50.6% vs 18.9%）。男生超重发生率随着年龄增高而逐步升高，女生超重发生率则保持稳定。依据父母的BMI将2025名在校学生分为四组：I) 学生父母双方BMI都处于正常范围；II) 学生父亲超重，母亲BMI处于正常范围；III) 学生父亲BMI处于正常范围，母亲超重；IV) 学生父母双方均超重。同第一组儿童相比，第二、三、四组儿童发生超重的风险因素分别为2.26、2.71和4.36。Logistic回归分析显示性别、父亲和母亲的BMI是儿童发生超重的危险因素。结论：以上海在校学生为研究对象，结果显示父母双方的BMI均是子女发生超重和肥胖的风险因素。.