Background: Obstructive sleep apnea has a high prevalence and is characterized by acute nocturnal hemodynamic and neurohormonal abnormalities that may increase the risk of mi during the night.

背景：阻塞性睡眠呼吸暂停症有较高的发病率，它得主要特征是急性的夜间血流动力学改变和神经激素分泌异常，而这些都可能增加心肌梗塞患者在夜间的发病率。

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The prevalence of PAOD in advanced elder with lipoprotein abnormalities is 2-3 times than in common elder.

高龄血脂异常患者PAOD的现患率是普通老年患者的2 - 3倍。

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Questionnaires were completed both by the parents and the pediatrician, and the prevalence of birth abnormalities was compared with data from national registers.

问卷调查只针对父母及儿科医生。研究团队还将调查的缺陷儿童生育率与全国缺陷儿童登记册的数据进行比较。

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Dr. Volkmar said it is possible there was in fact an increase in the rate of autism over the long run, because of changes over time such as a greater prevalence of older fathers contributing sperm with small genetic abnormalities.

WSJ: Autism Diagnoses Up Sharply