[Study on the national program of monltoring the iodized-salt situation in 2004].
OBJECTIVE
To understand the situation of quality and consumption of iodized-salt at production and household levels through monitoring on salt.


METHODS
9 townships were chosen in each county at different locations. In each township, two villages were selected in the center of the township and another two villages in remote settings. In each village, 8 households were selected for salt collection. The iodine concentrations in salt (except some special kinds of salt) were detected by method of direct titration with criteria in GB/T 13025.7-1999, in which the iodine content in qualified iodized-salt was set as 20 to 50 mg/kg and that in non-iodized-salt it was below 5 mg/kg.


RESULTS
Except for Tibet and Xinjiang, lot qualified rate of production level was 97.39% at the national level. Except for Xinjiang, the qualified rate of iodized-salt of household level was 96.45%; qualified iodized-salt coverage rate was 93.47%; noniodized-salt coverage rate was 3.09%. The results of the iodized-salt monitoring in 2004 maintained almost the same level as that in 2002. At production level,lot qualified rate of iodized-salt in Sichuan and Qinghai provinces were below 90%. At household level the qualified rate of iodized-salt in Sichuan and Hainan were below 90%. The coverage rates of qualified iodized-salt were below 90% for the total 7 provinces. In 5 provinces, the non-iodized-salt coverage rates were above 10%.


CONCLUSIONS
At national level the qualification of iodized-salt at production level was satisfactory. The coverage rates of qualified iodized-salt were below 90% not only in western but in some eastern provinces(including Beijing), which indicated that importance should be attached to the western areas and some newly discovered areas with problems as well. Through continual improvement of qualified iodized-salt coverage, sustained IDD elimination will be achieved.
Department of Iodine Deficiency Disorders, Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
Jing
J
Xu
Su-mei
SM
Li
Jian-doing
JD
Zheng
Jian-qiang
JQ
Wang
Qing Si
QS
Zheng
Hui-jie
HJ
Dong
D002681:China; D006798:Housing; D006801:Humans; D007455:Iodine / Q000191:economics* / Q000600:supply & distribution*; D011159:Population Surveillance; D017673:Sodium Chloride, Dietary / Q000191:economics* / Q000600:supply & distribution*
D017673:Sodium Chloride, Dietary; C034024:iodized salt; D007455:Iodine