Analyzing the reasons on high TGR of school children in the non-reaching standard counties
ZHANG Gen - hong, WANG Yu, ZHENG He - ming, et al (Henan Institute of Health Inspection, Zhengzhou 450003, China)
Objective In order to analyze the reason on the high thyroid goiter rate(TCR) of school children aged 8 to 10 years in the non-reaching standard counties. Methods Children's thyroid glands were examined in the way of B ultrasonogra-phy and palpation, a lot of influencing factors of TCR were comparatively analyzed. Results The eligible rates of iodine salt of the 3 counties in the sampling counties are lower than 90%; The TCR of the school children selected by different methods was variant; The TGR in high level fluorine group was obviously higher than that in low level fluorine group. Conclusions The reason on the high TGR of school children in the non-reaching standard counties lies in 3 respects below: ①the wrong method of calculating age; ② high level fluorine; ③ the eligible quality of iodine salt is low.