title: [Impact evaluation of universal salt iodization on spectrum of thyroid diseases in Changzhou area, Jiangsu, China].
abstract: 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.
authors.affiliation: Changzhou Center for Disease Control and Prevention, Changzhou 213003, China.
authors.forename: Min-yi
authors.initials: MY
authors.lastname: Wu
authors.forename: Qing-lan
authors.initials: QL
authors.lastname: Zhang
authors.forename: Pei-hua
authors.initials: PH
authors.lastname: Wang
authors.forename: Yong-gen
authors.initials: YG
authors.lastname: Zou
authors.forename: Shi-ying
authors.initials: SY
authors.lastname: Zhu
authors.forename: Rui-zhen
authors.initials: RZ
authors.lastname: Leng
authors.forename: Wei-ying
authors.initials: WY
authors.lastname: Xie
authors.forename: Jin-kou
authors.initials: JK
authors.lastname: Zhao
mesh_terms: 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*
chemical_list: D017673:Sodium Chloride, Dietary; C034024:iodized salt; D007455:Iodine