论文部分内容阅读
目的了解碘盐对碘缺乏病(IDD)干预防治效果。方法按容量比例概率抽样法,选取东南西北中5个方位,每个方位随机抽取一所乡级小学和4个村,8~10岁儿童和居民户为监测对象。触诊法检查甲状腺;尿碘测定采用砷铈催化分光光度测定法;盐碘测定采用直接滴定法。消除碘缺乏病评估技术指标:居民合格碘盐食用率;尿碘中位数(MUI);甲状腺肿大率;碘缺乏病防治知识。结果碘盐干预前1995年监测1287人,甲状腺肿大151例,肿大率为11.7%,患病率为0.8%,MUI109.4μg/L。干预后1996-2009年监测8781人,甲状腺肿大523例,肿大率为1.2%~10.2%,呈递降趋势(2χ=142.152,P=0.001),患病率为0~0.3%,MUI168.7~293.0μg/L。居民户碘盐监测5833份,合格碘盐4816份,碘盐覆盖率为89.1%,碘盐合格率为92.7%,合格碘盐食用率为82.6%,盐碘均值42.3 mg/kg,标准差5.8,变异系数13.8%,总体均数95%可信限为41.6~42.9 mg/kg。调查784人次,人日均食盐消耗量8.2 g。2009年甲状腺肿大率低于1995年(2χ=26.881,P=0.001),患病率差异无统计学意义(2χ=0.806,P=0.4),MUI高于1995年(u=8.507,P<0.01),居民户合格碘盐食用率高于1996年(2χ=151.414,P=0.001)。结论该地区碘缺乏病防治效果显著,达到碘缺乏病消除标准;儿童尿碘浓度基本适宜。
Objective To understand the preventive and therapeutic effects of iodized salt on iodine deficiency disorders (IDD). Methods According to the method of probability sampling by capacity, five locations in northwestern, northeastern and northwestern China were selected. One township primary school, 4 villages, 8 to 10 years old children and residents were selected randomly from each location for monitoring. Palpation examination thyroid; urinary iodine determination using arsenic cerium catalytic spectrophotometry; salt iodine determination by direct titration. Elimination of iodine deficiency disorders Evaluation of technical indicators: Resident qualified iodized salt consumption; median urinary iodine (MUI); goiter rate; prevention and treatment of iodine deficiency disorders knowledge. Results Before iodized salt intervention in 1995, 1287 patients were monitored, and 151 cases of goiter were observed. The rate of enlargement was 11.7%, the prevalence was 0.8% and MUI was 109.4μg / L. After the intervention, 8781 people were monitored during the period from 1996 to 2009, with 523 cases of goiter. The swelling rate was 1.2% -10.2%, showing a decreasing trend (2χ = 142.152, P = 0.001). The prevalence rate was 0 ~ 0.3%, MUI168. 7 ~ 293.0μg / L. 5833 for iodized salt monitoring, 4816 for qualified iodized salt, 89.1% for iodized salt, 92.7% for iodized salt, 82.6% for qualified iodized salt, 42.3 mg / kg for salt iodine, and a standard deviation of 5.8 , The coefficient of variation of 13.8%, the overall mean 95% confidence limit of 41.6 ~ 42.9 mg / kg. 784 surveyed people, the daily average salt consumption 8.2 g. The prevalence of goiter in 2009 was lower than that in 1995 (2χ = 26.881, P = 0.001). There was no significant difference in the prevalence between the two groups (2χ = 0.806, P = 0.4) 0.01). The consumption rate of qualified iodized salt of households was higher than that of 1996 (2χ = 151.414, P = 0.001). Conclusion The prevention and treatment of iodine deficiency disorders in this area is significant, reaching the standard of elimination of iodine deficiency disorders. The urinary iodine concentration in children is basically suitable.