[Impact evaluation of universal salt iodization on spectrum of thyroid diseases in Changzhou area, Jiangsu, China].
OBJECTIVE
To evaluate the impact of universal salt iodization using monitoring data on correctional status of iodine deficiency and hospitalized thyroid diseases.


METHODS
Retrospective survey was conducted to collect medical records of hospitalized thyroid disease cases. Routine monitoring data on population iodine nutrition status and goiter prevalence were analyzed.


RESULTS
The coverage of adequately iodized salt was consistently above 95%. Hospitalization rate of thyroid diseases rose steadily, and peaked at 54.5 per 100,000. The proportion of hospitalized thyroid disease among hospitalized diseases also rose with female and those aged above 40 years old mostly affected. The proportion of hospitalized hyperthyroidism among total hospitalized thyroid disease rose from 13.6% to 34.7%.


CONCLUSIONS
Universal salt iodization might eliminate iodine deficiency while other impact still exists. However, the benefits of universal salt iodization should be far overweight the adverse effects.
Wu
Min-yi
MY
Changzhou Center for Disease Control and Prevention, Changzhou 213003, China.
Zhang
Qing-lan
QL
Wang
Pei-hua
PH
Zou
Yong-gen
YG
Zhu
Shi-ying
SY
Leng
Rui-zhen
RZ
Xie
Wei-ying
WY
Zhao
Jin-kou
JK
D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D007455:Iodine / Q000627:therapeutic use*; D008297:Male; D017673:Sodium Chloride, Dietary / Q000627:therapeutic use*; D013959:Thyroid Diseases / Q000453:epidemiology* / Q000517:prevention & control*
D017673:Sodium Chloride, Dietary; C034024:iodized salt; D007455:Iodine