Objective To explore the secular trend and prevalence of malnutrition among Chinese Tibetan students aged 7 to 18 years old from 1991 to 2014,and to provide basis for prevention and control of malnutrition among Tibetan students and relevant policy making. Methods Based on the data from six Chinese National Surveys on Students Constitution and Health (CNSSCH) in1991,1995,2000,2005,2010,2014,malnutrition was identified by the height standard weight method in 1985,and the secular trend and epidemic status of the malnutrition prevalence among Tibetan students aged 7 to 18 were described by gender and age. Results From 1991 to 2014,the malnutrition prevalence among Tibetan students aged 7 to 18 showed a decreasing trend,the prevalence of malnutrition decreased from 50.53% to 26.67%,nearly 50% decline,while the proportion of moderate to severe malnutrition decreased from 20.07% to 12.09%.From 1991 to 2014,the trends of malnutrition prevalence of different gender or age groups were in parallel with the overall trend.Malnutrition prevalence of males and females dropped from 49.07% and 51.97% to 24.79% and 28.57% respectively.The malnutrition prevalence of 7~9,10~12,13~15 and 16~18 years old groups decreased from 39.76%,47.83%,59.09% and 55.41% to 20.66%,25.66%,33.55% and 27.50% respectively.Malnutrition prevalence of female students was 2.31~6.22 percentage points higher than that of male students.The malnutrition prevalence of low age group was lower than that of high age group,and the proportion of moderate to severe malnutrition had similar pattern. Conclusions The prevalence of malnutrition of Tibetan primary and middle school students in Tibet is generally declining,but still high.It is necessary to further strengthen the malnutrition prevention and control work,and pay more attention to the malnutrition control among secondary school students and girls.
Key words
primary and secondary school students /
Tibet /
Tibetan /
malnutrition /
trend
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