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对山西省一个轻度缺碘地区０～１２岁儿童进行精神发育迟滞现况调查，并以缺碘已补碘及非缺碘地区为对照。结果发现轻度缺碘地区儿童精神发育迟滞现患率为３．７５％，其他两个地区分别为１．３６％及１．１７％。对轻度缺碘地区３８名精神发育迟滞儿童采用１∶１配对调查经Ｌｏｇｉｓｔｉｃ回归模型分析，与智力低下有关的因素有：母亲个性内向或外向（ＯＲ＝２．１０），母亲文化偏低（ＯＲ＝１．８５）及不满意的婚姻（ＯＲ＝１．５５）。营养调查发现如果某些影响智力发育元素如锌、铁的摄入在轻度缺碘地区儿童较非缺碘地区为高，缺碘地区儿童经补碘后智力发育水平有可能赶上非缺碘地区。
To investigate the status of mental retardation in children aged 0 ~ 12 in a region with mild iodine deficiency in Shanxi Province, and to compare iodine deficiency with iodine deficiency and non-iodine deficiency areas. The prevalence of mental retardation was 3.75% in children with mild iodine deficiency and 1.36% and 1.17% in the other two regions, respectively. The results of Logistic regression analysis showed that the factors associated with mental retardation were introverted or extroverted (OR = 2.10), low mothers’ culture (lower than normal) OR = 1.85) and unsatisfied marriage (OR = 1.55). Nutritional survey found that if some mental developmental elements such as zinc and iron intake in children with mild iodine deficiency than non-iodine deficiency areas, children with iodine deficiency after iodine supplementation may catch up with the level of mental development non-iodine deficiency area.