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目的了解和掌握甘肃省张掖市重点人群尿碘水平状况,为缺碘人群采取干预措施提供科学依据。方法对重点人群的抽样采用整群随机法,采用过硫酸铵硫酸铈分光光度法WS/T 107-2006测定尿碘,直接滴定法GB/T13025.7-2012.2.1测定盐碘。结果重点人群家中食用盐盐碘中位数为29.30 mg/kg,碘盐合格率97.50%,碘盐覆盖率100.00%,合格碘盐食用率97.50%;0~2岁婴幼儿、8~14岁学生、哺乳期妇女及孕产妇尿碘中位数分别为150.91μg/L、175.21μg/L、171.45μg/L、156.25μg/L,差异无统计学意义(F=3.21,P>0.05);四类人群尿碘合格率分别为71.96%、75.74%、56.43%、50.94%,差异有统计学意义(χ2=145.34,P<0.001);六县(区)0~2岁婴幼儿尿碘合格率差异无统计学意义(χ2=3.24,P>0.05),8~14岁学生(χ2=123.42)、哺乳期妇女(χ2=98.65)及孕产妇(χ2=100.23)尿碘合格率差异均有统计学意义(P<0.001)。结论张掖市六县(区)不同人群碘盐合格率、合格碘盐食用率较高,尿碘中位数在国家标准推荐值范围内,尿碘合格率呈现出0~2岁婴幼儿、8~14岁学生较高,而哺乳期妇女、孕产妇较低的现象,应加强对重点人群的监测,平衡碘营养,降低碘缺乏病的发病。
Objective To understand and master the urinary iodine level of key population in Zhangye city of Gansu province and provide scientific basis for intervening measures for iodine deficiency population. Methods Sampling of key population was conducted by cluster randomization method, urinary iodine was determined by ammonium persulfate cerium sulfate spectrophotometry (WS / T 107-2006), and salt iodine was determined by direct titration method GB / T13025.7-2012.2.1. Results The median of iodized salt was 29.30 mg / kg, the qualified rate of iodized salt was 97.50%, the coverage of iodized salt was 100.00% and the qualified iodized salt was 97.50%. The infants aged 0 ~ 2 years and 8 ~ 14 years The median urinary iodine of students, lactating women and pregnant women were 150.91μg / L, 175.21μg / L, 171.45μg / L and 156.25μg / L, respectively, with no significant difference (F = 3.21, P> 0.05). The prevalence of urinary iodine in four groups was 71.96%, 75.74%, 56.43% and 50.94%, respectively (χ2 = 145.34, P <0.001) (Χ2 = 3.24, P> 0.05). The differences in the passing rate of urinary iodine among 8 ~ 14 years old students (χ2 = 123.42), lactating women (χ2 = 98.65) and pregnant women (χ2 = 100.23) were not statistically significant Statistical significance (P <0.001). Conclusions The iodine salt pass rate and qualified iodized salt rate of different populations in the six counties (districts) of Zhangye City are higher. The median of urinary iodine is within the national standard recommended value. The pass rate of urinary iodine shows infants and young children aged 0-2 years, 8 ~ 14-year-old students are higher, and lactating women, maternal lower phenomenon, should strengthen the monitoring of key populations, balance iodine nutrition, reduce the incidence of iodine deficiency disorders.