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目的分析甘肃省兰州市农村居民碘盐含量,为制定和调整碘缺乏病防制措施提供科学依据。方法 2013—2015年,每年在兰州市西固区、红古区和永登县按东、西、南、北、中划分5个区,每区各随机抽取1个乡,每个乡随机抽取4个行政村,在每个行政村抽检15户居民食用盐盐样共计2 700份,采用直接滴定法测定盐碘含量。结果 2013—2015年兰州市农村碘盐覆盖率(99.52%,χ2=1.082)、合格率(97.51%,χ~2=3.309)及合格碘盐食用率(97.04%,χ~2=1.958)差异均无统计学意义(均P>0.05),各率均以西固区最低,不同地区差异均有统计学意义(均P<0.05);碘盐中位数24.8 mg/kg,各年度、各地区均在24.0~25.4 mg/kg;盐碘含量主要集中在20~30(不包含30)mg/kg内、占87.0%,该比例以2013年最低(χ~2=8.641),各区(县)以红古区最低(χ~2=10.787),差异有统计学意义(均P<0.05)。结论兰州市农村碘盐质量良好,已达到国家消除碘缺乏病的标准,但存在区域不平衡问题。
Objective To analyze the iodine content of rural residents in Lanzhou City, Gansu Province, and to provide a scientific basis for the formulation and adjustment of prevention measures for iodine deficiency disorders. Methods From 2013 to 2015, five districts were divided into east, west, south, north and west in Xugu, Honggu and Yongdeng counties in Lanzhou City. Each district randomly selected one township, and each township was randomly selected 4 administrative villages in each administrative village sampling 15 households inhabit salt salt samples a total of 2 700, the use of direct titration salt iodine content. Results The coverage rate of iodized salt in rural areas in Lanzhou between 2013 and 2015 was 99.52% (χ2 = 1.082), the qualified rate (97.51%, χ ~ 2 = 3.309) and the qualified iodized salt (97.04%, χ ~ 2 = 1.958) (All P> 0.05). The rates were lowest in Xigu District and the differences were statistically significant in different areas (all P <0.05). The median of iodized salt was 24.8 mg / kg in each year and all regions (Ranged from 24.0 to 25.4 mg / kg). Salt iodine concentrations were mainly concentrated in 20-30 (excluding 30) mg / kg, accounting for 87.0% of the total, with the lowest in 2013 (χ ~ 2 = 8.641) The lowest in the red old area (χ ~ 2 = 10.787), the difference was statistically significant (P <0.05). Conclusion The quality of iodized salt in rural areas in Lanzhou is good and has reached the national standard of eliminating iodine deficiency disorders. However, there is a problem of regional imbalance.