ABSTRACT
[Summary] With populational proportional sampling (PPS) method in Baiguo village,one central primary sehool was selected,and villagers aged 20-80 in nearly village were chosen as control.Cross-seetional survey methodology was employed,B-type ultrasonography was used to determine thyroid volume and nodule of ebildren.Arsenic cerium catalytic spectrophotonetric assay was employed to detect urinary iodine.A direct titration measurement was used to determinate iodine content in salt.180 children aged 6-12 were surveyed,2 cases of goiter were found (1.11％).16 cases of thyroid nodules were discovered(8.89％),including 3 boys(3.45％,n =87) and 13 girls(13.98％,n =93).Girls had a higher prevalence than boys (x2 =6.154,P =0.015).The prevalence of thyroid nodules in that village was 24.51％,being statistically significant between 2 groups (x2 =17.368,P =0.001),and increasing with the age.