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本文对河南省永城县八十年代初期调查并被确定的４２８个氟病村饮水氟含量进行了复查，结果表明，本次复查与八十年代初期调查结果明显不同，该县原氟病村４３７个，水氟大于１．０ｍｇ／Ｌ的４２４个，占９７．９３％，而本次复查其原氟病村中的４２８个，复查率为９７．０３％，水氟大于１．０ｍｇ／Ｌ的２５４个，占５９．３％，前后两次结果差异非常显著（Ｘ２＝１８１．１７ｐ＜０．００５）；以２．１ｍｇ／Ｌ以上水氟含量计，原调查自然村数为２６３个，占６０．１８％，本次复查自然村为６１个，占１４．２５％，差异非常显著（Ｘ２＝１９４．７２ｐ＜０．００５）。结果提示：为加快和促进饮水型地氟病防治工作的顺利开展，对原定病区和拟改水病村水氟与病情应进行必要的核查。
This paper reviews the fluorine content of drinking water in 428 fluorosis villages surveyed and determined in Yongcheng County of Henan Province in the early 1980s. The results show that the findings of this review and the early 1980s are obviously different. The original fluorosis village 437, water fluorine is greater than 1.0mg / L of 424, accounting for 97.93%, and this review of the original fluorine village 428, the review rate was 97.03%, water fluoride is greater than 1.0mg / L, 254, accounting for 59.3%, the difference between the two results was very significant (X2 = 181.17p <0.005); with 2.1mg / L of water fluoride content, the original survey of natural villages was 263, Accounting for 60.18%. There are 61 natural villages in this review, accounting for 14.25%. The difference is very significant (X2 = 194.72p <0.005). The results suggest that in order to speed up and promote the prevention and treatment of drinking-water-borne fluorosis, the necessary verification should be carried out on the fluoride and illness of the original ward and the water pollution to be changed.