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目的用2004—2006年碘盐监测结果分析中国食盐加碘浓度下调的可行性。方法利用碘盐监测数据库分析软件及SAS 9.0软件对碘盐监测数据和高危地区育龄妇女尿碘监测资料进行统计分析。结果根据监测结果,中国居民合格碘盐食用率不断提高,碘盐生产质量稳定,生产环节碘的损失量为2 mg/kg,流通环节碘的损失不足3 mg/kg。中国居民每日摄盐量高于WHO推荐最,监测尿碘监测平均水平超过适宜范围。结论下调中国食盐加碘浓度是必要的。建议现行的35 mg/kg下调至25～28 mg/kg,碘盐的允许变异范围由现行的±15 mg/kg下调至±10 mg/kg。
Objective To analyze the feasibility of down-regulation of iodized salt concentration in China from 2004 to 2006 with iodized salt monitoring results. Methods Iodine salt monitoring database analysis software and SAS 9.0 software were used to analyze the monitoring data of iodized salt and urinary iodine monitoring data of women of childbearing age in high risk areas. Results According to the monitoring results, the consumption rate of qualified iodized salt of Chinese residents continued to increase, and the quality of iodized salt production was stable. The loss of iodine in production was 2 mg / kg and the loss of iodine in circulation was less than 3 mg / kg. Daily intake of salt by Chinese residents is higher than recommended by the WHO, monitoring the average level of urinary iodine monitoring beyond the appropriate range. Conclusion It is necessary to lower iodine concentration in Chinese salt. It is recommended that the current 35 mg / kg be adjusted down to 25-28 mg / kg, and the allowable variation of iodized salt should be reduced from the current ± 15 mg / kg to ± 10 mg / kg.