Gross-Tsur V, Manor O, Shalev R S
Neuropaediatric Unit, Shaare Zedek Medical Center, Jerusalem, Israel.
Dev Med Child Neurol. 1996 Jan;38(1):25-33. doi: 10.1111/j.1469-8749.1996.tb15029.x.
One hundred and forty-three 11-year-old children with development dyscalculia, from a cohort of 3029 students, were studied to determine demographic features and prevalence of this primary cognitive disorder. They were evaluated for gender, IQ, linguistic and perceptual skills, symptoms of attention-deficit hyperactivity disorder (ADHD), socio-economic status and associated learned disabilities. The IQs of the 140 children (75 girls and 65 boys) retained in the study group (three were excluded because of low IQs) ranged from 80 to 129 (mean 98.2, SD 9.9). 26 per cent of the children had symptoms of ADHD, and 17 per cent had dyslexia. Their socio-economic status was significantly lower than that of the rest of the cohort, and 42 per cent had first-degree relatives with learning disabilities. The prevalence of dyscalculia in the original cohort was 6.5 per cent, similar to that of dyslexia and ADHD. However, unlike these other learning disabilities, dyscalculia affected the two sexes in about the same proportions.
在3029名学生组成的队列中，对143名患有发育性计算障碍的11岁儿童进行了研究，以确定这种原发性认知障碍的人口统计学特征和患病率。对他们进行了性别、智商、语言和感知技能、注意力缺陷多动障碍（ADHD）症状、社会经济地位以及相关学习障碍的评估。研究组中保留的140名儿童（75名女孩和65名男孩，3名因智商低被排除）的智商范围为80至129（平均98.2，标准差9.9）。26%的儿童有ADHD症状，17%有诵读困难。他们的社会经济地位明显低于队列中的其他儿童，42%的儿童有学习障碍的一级亲属。原始队列中计算障碍的患病率为6.5%，与诵读困难和ADHD的患病率相似。然而，与其他学习障碍不同的是，计算障碍对两性的影响比例大致相同。
