安徽省汉族6～22岁学生BMI指标分析

BMI Analysis Among Han Students Aged 6-22 in Anhui Province

目的了解2005年安徽省汉族6～22岁学生BMI指标特征及其20a间的变化,为改善学生健康状况提供依据。方法采用分层整群抽样方法,在安徽省合肥市、黄山市及宿州市城乡各抽3所中、小学和合肥市1所综合性大学,学生年龄范围为6～22岁,共计9000人,对其BMI指标进行测算。结果2005年安徽省学生18岁前BMI指标总体随年龄增长呈现逐年增加趋势,18岁后在相对稳定的状态下有所起伏,其中性别、城乡差异有统计学意义;2005年较1985年BMI指标城乡7～13岁学生均增高,差异有统计学意义,但乡村14～22岁学生明显降低,近50%的年龄组差异有统计学意义。结论2005年安徽省学生形态发育状况有所改善,但农村学生发育状况仍不乐观。

Objective To analyze the distribution of body mass index （BMI） of Han students aged from 6 to 22 and its changes during the twenty years from 1985 to 2005, and to provide evidence for improving students＇ mental health. Methods Stratified and cluster sampling method was used to collect data among 9 000 students from three cities in Anhui in 2005. Their BMIs were calculated. Results In general, BMI kept increasing before the age of 18 and stabilized after the age of 18, though fluctuation could still be observed. Statistical significance was found between urban and rural or boys and girls. BMI among students aged from 7 to 13 in 2005 showed an increasing trend compared with that in 1985, but a decreasing trend was found in the students aged from 14 to 22. Conclusion The general nutrition status of Anhui students in 2005 has been improved in the past twenty years, but physical development growth among students from rural area should be improved.