关键词: 学龄前儿童, 饮奶行为, 生长发育

Abstract: Objective To evaluate the milk consumption and the effect on growth among children aged 2~6 years old in urban area of Chengdu. Methods From April to May in 2014,707 healthy children aged 2~6 years old were selected by cluster sampling method in two kindergartens from urban area of Chengdu.Data on basic information,the milk consumption (the type of milk,the frequency,amount and time of milk intake) and milk intake reaction of these children were obtained by a questionnaire.Body weight and height were measured.Body mass index(BMI),Height -for-age Z scores(HAZ),Weight -for-age Z scores(WAZ)and Body mass index -for -age Z scores(BAZ) were calculated to assess growth of preschool children. Results 98.6%(697/707) of children had milk in the last 3 months,84.6%(598/707) had milk every day,the rate of 2-year-old children's daily milk intake was higher than that of children aged 4~,5~ and 6~7 years old (χ²=14.39,11.80,13.88,respectively,P<0.005).The mean milk intake was 364.0 ml per day,the mean milk intake of children aged 2 years was more than that of children aged 4~,5~ and 6~7 years old (P<0.05),the mean milk intake of children aged 3 years old was more than that of children aged 4 and 6~7 years old (P<0.05).55.8%(389/697) of children had two types of milk,about 35.2%(245/697) had liquid milk and yogurt at the same time.81.8% (570/697) of children had milk at breakfast,and 62.9% (444/697) had something else at the same time.About 11.6% (82/707) of children had uncomfortable symptoms after milk intake.There were no differences in height,weight,BMI,WAZ,HAZ and BAZ of preschool children in different milk drinking group. Conclusion Daily milk consumption among children aged 2~6 years old from urban area of Chengdu still needs to be improved.

Key words: pre-school children, milk consumption, growth