title: [Study on the prevalence of goiter associated with some factors in Guangzhou elderly population].
abstract: OBJECTIVE
  To study the prevalence of goiter associated with some factors in Guangzhou after the implementation of universal salt iodization.
  
  
  METHODS
  With cross-sectional study, the electronic questionnaire was used to investigate basic demographic indexes, socioeconomic indexes and the history of thyroid diseases in 10305 Guangzhou elderly people who aged 50 and more by face to face interview. The prevalence of goiter was got by thyroid palpation, and the relationship between the prevalence and factors mentioned above was analyzed. Chi-square test was used to test the difference of the rates, and Logistic regression model was used to do multi-factors analysis.
  
  
  RESULTS
  (1) Overall, 442 cases of thyroid large were found, including I grade 330, formed 74.7%, and II grade 112, formed 25.3%. The prevalences in total, female and male were 4.3%, 5.1% (369 cases) and 2.4% (73 cases) respectively. The prevalence was significantly higher in the female than that in the male. (2) The results of multi-Logistic regression showed that gender, history of thyroid diseases and education were the main impact factors. The risks suffered from goiter in the female, in those who had ever suffered from thyroid diseases and in those who were middle school education and higher were more 1.81 times, 5.43 times and 1.25 times than those in the male in those who had never suffered from thyroid diseases and in those who were primary school education and lower respectively.
  
  
  CONCLUSIONS
  The iodine nutrition of Guangzhou elderly population was fairly moderate. Female and those who had ever suffered from thyroid diseases got a higher risk suffering from goiter.
authors.affiliation: Department of Epidemiology, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou 510515, China. zwsgz@yahoo.com.cn
authors.forename: Weisen
authors.initials: W
authors.lastname: Zhang
authors.forename: Chaoqiang
authors.initials: C
authors.lastname: Jiang
authors.forename: Suili
authors.initials: S
authors.lastname: Rao
authors.forename: Qing
authors.initials: Q
authors.lastname: Chen
mesh_terms: D000368:Aged; D002681:China / Q000453:epidemiology; D003430:Cross-Sectional Studies; D005260:Female; D006042:Goiter / Q000453:epidemiology* / Q000517:prevention & control*; D006801:Humans; D007455:Iodine / Q000008:administration & dosage / Q000009:adverse effects; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D015995:Prevalence; D012307:Risk Factors; D012737:Sex Factors; D012959:Socioeconomic Factors; D017673:Sodium Chloride, Dietary / Q000008:administration & dosage / Q000009:adverse effects; D011795:Surveys and Questionnaires
chemical_list: D017673:Sodium Chloride, Dietary; C034024:iodized salt; D007455:Iodine