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《Ningxia Medical Journal》 1993-06
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A 1991 Survey of Anaemia Among 3998 Primary & Middle School Students in Ningxia

Hu Shugin, Feng Yuechun, Liu Shulan, Zhang Binlan, Yang Liqun, Li Tong(Ningxia Hlth. & Anti-epidemic Station)  
A survey of anaemia was conducted in 1991 among 24 primary middle schools in Ningxia, using the HIrCn detecting method recommended by WHO. The 3998 students investigated belonged to five age groups, i.e. age 7,9, 12, 14 17 yrs. The resultant data records indicated that the chance of having anaemia was 35.49 %, in which, 98.38% being light anaemia, and none was of the severe type. The mean blood conc. of Hgb increased with age, Showing a positive correlation——r 0.96 for boys 0.52 for girls. At age 9 yrs and afterwards, the mean Hgb in boys was higher than that. in girls, difference between them being statistically significant. As to prevalence rate (PR) of anaemia, (1) the difference between PRs of Hui Han students, as well as that between PRs of students coming from cities countryside, were both of no statistical significance; (2) the PR of anaemia among girls was 37.16%, that among boys was 33.82%, difference between these two being still statistically significant. It is found out that, the actual nutritional status of anaemia students was more serious than that of students without anaemia, difference between them being very prominant.
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