Murphy C C, Yeargin-Allsopp M, Decouflé P, Drews C D
Division of Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Ga 30341.
Am J Public Health. 1995 Mar;85(3):319-23. doi: 10.2105/ajph.85.3.319.
In this study, data from the Metropolitan Atlanta Developmental Disabilities Study were used to determine the administrative prevalence (i.e., the number of children previously identified for service provision) of mental retardation among 10-year-old children during the years 1985 through 1987.
Children with mental retardation (intelligence quotient [IQ] of 70 or lower) were identified by review of records from multiple sources, with the public schools as the primary source.
The overall administrative prevalence of mental retardation was 12.0 per 1000 children. The rate for mild mental retardation (IQ of 50 to 70) was 8.4 per 1000 and the rate for severe mental retardation (IQ lower than 50) was 3.6 per 1000. The prevalence was higher in Black children than in White children (prevalence odds ratio [POR] = 2.7) and in boys than in girls (POR = 1.4). Children with severe mental retardation had more coexisting disabilities than did children with mild mental retardation.
The mental retardation prevalence rates reported here, especially the race-specific rates, may reflect social and demographic features unique to the metropolitan Atlanta area and therefore should be used with caution in making comparisons with other populations.
在本研究中，使用来自大亚特兰大发育障碍研究的数据来确定1985年至1987年期间10岁儿童中智力迟钝的行政患病率（即先前确定需要提供服务的儿童数量）。
通过审查多个来源的记录来确定智力迟钝儿童（智商[IQ]为70或更低），其中公立学校是主要来源。
智力迟钝的总体行政患病率为每1000名儿童中有12.0例。轻度智力迟钝（智商为50至70）的发生率为每1000名中有8.4例，重度智力迟钝（智商低于50）的发生率为每1000名中有3.6例。黑人儿童的患病率高于白人儿童（患病率比值比[POR]=2.7），男孩的患病率高于女孩（POR=1.4）。重度智力迟钝儿童比轻度智力迟钝儿童有更多的共存残疾。
这里报告的智力迟钝患病率，特别是按种族划分的患病率，可能反映了大亚特兰大地区独有的社会和人口特征，因此在与其他人群进行比较时应谨慎使用。
