Iodine nutritional status of adults during a period of salt iodization.
BACKGROUND
To measure the iodine nutritional status of island adults in Zhoushan, China.


METHODS
A comparison study was carried out in eight villages. These were selected from iodized salt and non-iodized salt districts of Zhoushan island by random sampling. The Mann-Whitney test was used to compare the urinary iodine concentration and dietary iodine intake between the two districts.


RESULTS
The median of urinary iodine concentration in the non-iodized salt group was 90 micrograms/l, which was lower than 194 micrograms/l in the iodized salt group (u = 14.673; p < 0.000), whereas the median of daily dietary iodine intake in the two groups was 128 and 147 micrograms, respectively (u = 1.847; p = 0.065). There was no significant correlation between dietary iodine intake and urinary iodine concentration (p = 0.095).


CONCLUSIONS
Salt iodization is necessary. Special characteristics of the island diet should also be considered.
School of Public Health, Zhejiang University, Hangzhou 310031, PR China. ck@zju.edu.cn
K
K
Chen
Y
Y
Zou
D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D002681:China / Q000453:epidemiology; D019587:Dietary Supplements / Q000706:statistics & numerical data*; D005260:Female; D006042:Goiter / Q000453:epidemiology / Q000517:prevention & control*; D006801:Humans; D007407:Interviews as Topic; D007455:Iodine / Q000008:administration & dosage* / Q000172:deficiency / Q000652:urine; D008297:Male; D008875:Middle Aged; D009752:Nutritional Status / Q000502:physiology*; D015995:Prevalence; D017673:Sodium Chloride, Dietary / Q000008:administration & dosage* / Q000652:urine; D013053:Spectrophotometry
D017673:Sodium Chloride, Dietary; C034024:iodized salt; D007455:Iodine