She and her colleagues examined the medical records of 228 memory-clinic patients who had been diagnosed with different kinds of dementia, two-thirds with Alzheimer's disease.

她和她的同事研究了228例记忆门诊病人的医疗记录，这些病人都被诊断不同种类的痴呆症，有三分之二的人有阿尔兹·海默症。

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It was aimed at measuring the frequency and associated risk factors of HIV dementia in an HIV clinic where 24 of 78 (31 per cent) randomly sampled patients had HIV dementia.

在某个艾滋病诊所，研究者专门计算过病毒性痴呆的发生率及相关危险因子，在随机抽取的78位艾滋患者中有24位患有病毒性痴呆，比例占31%。

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Kelley and colleagues searched the Mayo Clinic database for patients who began to develop dementia between 17 and 45 years that was not related to trauma, brain infections or mental retardation.

Kelley及其同事们研究了梅奥医院中那些没有外伤、大脑传染病或智力延迟因素，年龄在17 ~ 45岁开始发生痴呆疾病的患者的临床数据。

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Between 1 and 4 percent of people over the age of 65 have vascular dementia, according to the Mayo Clinic.

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Dr. Barbara Messinger-Rapport, geriatrics chief at the Cleveland Clinic, noted that half of people 85 and older in developed countries have some dementia, usually Alzheimer's.

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