Five-year Trend Of Obesity Prevalence Among Urban And Surburban Children Aged From 6 To 18 Years In Shanghai In 2003-2008

Context:Obesity is a widespread and growing public health problem in the 21 century.It is epidemic and difficult to control with increaseing risk of developing chronic metabolic diseases.Many studies have presented trends of overweight and obesity prevalence in young Chinese children aged less than 7 years old,and most of the data were too out-of-date to suggest the current outline.Objective:To establish baseline data on the trend in overweight and obesity prevalence among children and adolescents in Shanghai during the year 2003 and 2008,which is important for the development of appropriate health policy and for the subsequent monitoring of the outcome of any interventions designed to tackle or prevent childhood overweight and obesity.Subject and method:We selected two districts in Shanghai in 2003,randomly,one in urban area and the other in suburb area.All students in the primary schools,junior and senior high schools of the two districts were screened in 2003 and 2008 respectively. The main variables we studied were the subjects'weight,height,age and sex.Body composition was estimated by using BMI.Results:(1)The prevalences of obesity and overweight were significantly higher in urban district than in suburb area(2003:obesity:x~2=243.21,p＜0.01;overweight: x~2=354.26,p＜0.01.2008:obesity:x~2=71.73,p＜0.01;overweight:x~2=156.73,p＜0.01) and also were significantly higher in male than in female(2003:obesity:x~2=525.41, p＜0.01;overweight:x~2=717-39.p＜0.01.2008:obesity:x~2=846.48,p＜0.01; overweight:x~2=808.83,p＜0.01).(2)The prevalences of both obesity and overweight decreased with the increasing of age(p＜0.01).(3)The overall prevalence of obesity and overweight in all children and adolescents(6-18 years) rose significantly from 3.72%to 4.58%and from 13.67%to 15.41%between 2003 and 2008(x~2=70.49,p＜0.01),whereas the increase of the prevalence of overweight and obesity did not reach significance in urban area.The standard prevalence of overweight and obesity increase significantly in each group(p＜0.01).Conclusion:The prevalence of obesity and overweight in children and adolescents has increased during the last past 5 years in the two districts of Shanghai.The male group has a significant increment of obesity and overweight prevalence.And the increase of obesity and overweight prevalence in suburb area is more significant higher than that in urban area.Therefore,more effective measures of obesity prevention should be given to the male group and the children and adolescents in suburb areas. Context:It is unclear how is the trend of height distribution among children and adolescents in Shanghai.Objective:To establish baseline data on the trend in short stature prevalence among children and adolescents in Shanghai during the year 2003 and 2008,which is important for the development of appropriate health policy and for the subsequent monitoring of the outcome of any interventions designed to tackle or prevent childhood overweight and obesity.Subject and method:We selected two districts in Shanghai in 2003,randomly,one in urban area and the other in suburb area.All students in the primary schools,junior and senior high schools of the two districts were screened in 2003 and 2008 respectively. The main variables we studied were the subjects' height,age and sex.We analysed the body height distribution and the prevalence of short stature.Results:(1)Body heights were significantly higher in boys than that in girls.(2) Compared with data in 2003,the mean height of 2008 was higher.(3)In the past 5 years,the overall increments were 0.09-4.03cm(Urban male),0.57-2.55m(Rural male), 0.42-3.76cm(Urban female) and 0.04-1.81cm(Rural female) for stature.(4)The prevalence of short stature was significantly higher in urban district than in suburb area(2003:x~2=139.73,p＜0.01;2008:x~2=186.73,p＜0.01) and also was significantly higher in male than in female(2003:x~2=21.36,p＜0.01;2008:x~2=8.77,p＜0.01).(5) The overall prevalence of short stature in all children and adolescents(6-18 years) decreased significantly from 3.74%to 2.22%between 2003 and 2008(x~2=315.46, p＜0.01).Conclusion:The distribution of height among children and adolescents aged from 6 to 18 years old in the two districts showed significantly increase between the two sexes from the year 2003 to 2008.The prevalence of short stature has decreased during the last past 5 years in the two districts of Shanghai. Context:It is unclear how is the trend of body mass index among children and adolescents in Shanghai.Objective:To establish baseline data on the trend in body mass index distribution among children and adolescents in Shanghai during the year 2003 and 2008,which is important for the development of appropriate health policy and for the subsequent monitoring of the outcome of any interventions designed to tackle or prevent childhood overweight and obesity.Subject and method:We selected two districts in Shanghai in 2003,randomly,one in urban area and the other in suburb area.All students in the primary schools,junior and senior high schools of the two districts were screened in 2003 and 2008 respectively. The main variables we studied were the subjects'weight,height,age and sex.Body composition was estimated by using BMI.Results:(1)The mean BMI was significantly higher in male students than that of female students[(19.2±3.8) kg/m~2 vs(18.5±3.3) kg/m~3,p＜0.01].(2)Compared with data in 2003,the mean BMI of 2008 was significantly higher(p＜0.01).(3)In 2008,P85 and P95 of BMI were 25.5 kg/m~2 and 29.0 kg/m~2 in boys,and 23.2 kg/m~2 and 26.0 kg/m~2 in girls respectively at 18 years old.Conclusion:The distribution of BMI among children and adolescents aged from 6 to 18 years old in the two districts showed significantly increase between the two sexes from the year 2003 to 2008.