K Chen1, Y Zou. 1. School of Public Health, Zhejiang University, Hangzhou 310031, PR China. ck@zju.edu.cn
Abstract
BACKGROUND: To measure the iodine nutritional status of island adults in Zhoushan, China. METHODS: A comparison study was carried out in eight villages. These were selected from iodized salt and non-iodized salt districts of Zhoushan island by random sampling. The Mann-Whitney test was used to compare the urinary iodine concentration and dietary iodine intake between the two districts. RESULTS: The median of urinary iodine concentration in the non-iodized salt group was 90 micrograms/l, which was lower than 194 micrograms/l in the iodized salt group (u = 14.673; p < 0.000), whereas the median of daily dietary iodine intake in the two groups was 128 and 147 micrograms, respectively (u = 1.847; p = 0.065). There was no significant correlation between dietary iodine intake and urinary iodine concentration (p = 0.095). CONCLUSIONS: Salt iodization is necessary. Special characteristics of the island diet should also be considered.
BACKGROUND: To measure the iodine nutritional status of island adults in Zhoushan, China. METHODS: A comparison study was carried out in eight villages. These were selected from iodized salt and non-iodized salt districts of Zhoushan island by random sampling. The Mann-Whitney test was used to compare the urinary iodine concentration and dietary iodine intake between the two districts. RESULTS: The median of urinary iodine concentration in the non-iodized salt group was 90 micrograms/l, which was lower than 194 micrograms/l in the iodized salt group (u = 14.673; p < 0.000), whereas the median of daily dietary iodine intake in the two groups was 128 and 147 micrograms, respectively (u = 1.847; p = 0.065). There was no significant correlation between dietary iodine intake and urinary iodine concentration (p = 0.095). CONCLUSIONS:Salt iodization is necessary. Special characteristics of the island diet should also be considered.