Conclusion There was mild iodine deficiency in coastal areas of Huidong County and the suitable salt iodine concentration should be 25±5 mg/kg in order to prevent iodine deficiency disorders by utilizing iodine salt.

Methods Taking urinary iodine as response variable, salt iodine and altitude as independent variable, linear regression and spatial autoregressive models were made.

Results 69.8%,32.8%,43.9% variations of children urinary iodine were caused by salt iodine, altitude and spatial autocorrelation in 1995,1997 and 1999, took altitude away, 57.6%,21.4%,18.8% of variations of urinary iodine were caused by other spatial factors.

-Result- Thyroid gland swell rate of children is 3.34%,the median of urine iodine is 124.3μg/L, there is no specimen which median of urine iodine is lower 50μg/L, salt iodine is 25.79±10.23mg/Kg, the percentage of household consuming effective iodine salt is 94.0%.

Conclusion There was mild iodine deficiency in coastal areas of Huidong County and the suitable salt iodine concentration should be 25±5 mg/kg in order to prevent iodine deficiency disorders by utilizing iodine salt.

-Result- Thyroid gland swell rate of children is 3.34%,the median of urine iodine is 124.3μg/L, there is no specimen which median of urine iodine is lower 50μg/L, salt iodine is 25.79±10.23mg/Kg, the percentage of household consuming effective iodine salt is 94.0%.

However, the former percentage of the urinary iodine the age of the children values landed to high value while increasing. The percentage of iodized salt was 95.5%, within which the consuming rate of qualified iodine salt was 94.69% and the media of iodine content in salt was 35.12 mg/kg.

Conclusions In this sample of schoolchildren with initially low or moderate level of iodine deficiency, the group receiving salt with 25 mg/kg (group A) recovered from iodine deficient on all indicators after 18 months of study. However when the iodine content of salt was floating, as seen in group B, the sizes of thyroid did not yet achieve normal status by 18 months.

Conclusion In order to provide scientific basis for IDD surveillance in China,other than bias due to methods of no-sampling, sample size should be further calculated in West China. Thus the main influencing factors of indicator variation could be measured with scientific and reasonable basis.

Methods The Zhejiang IDD surveillance results from some counties and cities were selected according to where the recent years iodine fortified salt met standard rate >90%, children median urinary iodine level >100μg/L, and did not have administrate iodine oil. The 97% percentile value was used as the determined reference value threshold.

To investigate iodine and selenium levels of neonates in the Shaanxi sub-clinical cretinism region of China after supplement of iodine salt for nearly twenty years.

The inhibiting action of alkyltriphenylphosphonium iodine salt ((C8H17)Ph3P+,I-) towards the corrosion behaviour of nickel in 1 M H2SO4 solution has been studied.

n iodine deficiency(IDD)survey was made among 7-14 years old children in the cityproper of Baotou in 1995.The result shows that the thyroid enlargement rate of the boys andgirls is 13.08%and 14.76%respectively,that the incidence rate of goiter is 0.19%in boysand 0.33%in the girls,that,by statistics processing,the thyroid enlargement rate of thegirls is obviously higher than that of the boys(u=2.36,P<0.05),that children's urinary io-dine value above 100mg/l is 88.33%and that the rate of residents'salt iodine-containingand...

n iodine deficiency(IDD)survey was made among 7-14 years old children in the cityproper of Baotou in 1995.The result shows that the thyroid enlargement rate of the boys andgirls is 13.08%and 14.76%respectively,that the incidence rate of goiter is 0.19%in boysand 0.33%in the girls,that,by statistics processing,the thyroid enlargement rate of thegirls is obviously higher than that of the boys(u=2.36,P<0.05),that children's urinary io-dine value above 100mg/l is 88.33%and that the rate of residents'salt iodine-containingand the qualified rate of salt iodine content is 97. 61%and 97. 20%repectively.It is provedthat the city proper of Baotou is an iodine deficiency area,and it is necessary to replenish io-dine artificially.

A cross-reference survey on the urban environmental iodine value and the condition of the iodine nutrition of the 10 258 school-age children in Hangzhou was carried out before and after the two years's implementation of the salt iodization measures.The results showed that iodine value in the drinking water,the daily diet and the salt was 1.48μg/L,60.5μg/d and 0.52mg/kg,respectively.Before salt iodization measures were taken,goiter rate detected by palpation and Bultrasonograph in the schoolage children was...

A cross-reference survey on the urban environmental iodine value and the condition of the iodine nutrition of the 10 258 school-age children in Hangzhou was carried out before and after the two years's implementation of the salt iodization measures.The results showed that iodine value in the drinking water,the daily diet and the salt was 1.48μg/L,60.5μg/d and 0.52mg/kg,respectively.Before salt iodization measures were taken,goiter rate detected by palpation and Bultrasonograph in the schoolage children was 10.02% and 14.98%,respectively,the median urinary iodine was 70.01μg/L and the percentage of the urinary iodine values>100μg/L was 30.20%,the children's average IQ was 112.14,among which the suburban children's average IQ was 104.45.After the implementation of two year's general IDD control's measures majoring in the salt iodization,goiter rate dropped to 5.16%,the median urinary iodine rised to 243.15μg/L,the chidren's averge IQ was 114.37.The results indicated that there was a mild iodine deficiency both in the urban environment and human bodies in Hangzhou,the effect of the IDD control measures majoring in salt iodization was significant.

Objective To know the thyroid nutritional status of Chong Qing through appraising and analysing the thyrocele rate and urine thyroid before and after the children nourish thyroid.Methods Use the way of overall surrey and PPS.Examine the state on the thyrocele rate and urine thyroid of the children in 8￣10 years.Results The thyrocele rate of children in 8￣10 years is 18.33%.It is 1/2 before the children nourish thyroid.Median of urine thyroid is above 300μg/L;Median of salt thyroid in the urban is above 20mg/kg.It...

Objective To know the thyroid nutritional status of Chong Qing through appraising and analysing the thyrocele rate and urine thyroid before and after the children nourish thyroid.Methods Use the way of overall surrey and PPS.Examine the state on the thyrocele rate and urine thyroid of the children in 8￣10 years.Results The thyrocele rate of children in 8￣10 years is 18.33%.It is 1/2 before the children nourish thyroid.Median of urine thyroid is above 300μg/L;Median of salt thyroid in the urban is above 20mg/kg.It has been much improved before the children nourished thyroid.Conclusions Thyroid deficiency can be corrected through nourishing the thyroid reasonably.