金说，美国课堂上的孩子们应该被包括在未来的研究中，以更好地评估自闭症谱系障碍发生率。

Kim said children in regular American classrooms should be included in future studies to get a better measure of the incidence of autism spectrum disorders.

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研究发现，从2003年到2008年，精神障碍的发生率已经上升了50个百分点。

The study found that the incidence of mental disorders had climbed more than 50 percent from 2003 to 2008.

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研究显示在过去三年中那些日照较多地区的视觉问题发生率猛增。

The study shows a sharp increase in the incidence of vision problems in the sunny regions over the past three years.

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