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十以上数字、年份、百分率、金额等都用阿拉伯数字表示，数字采用千位逗号隔断

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Dr. Yonas Geda

Mayo Clinic

Rochester

Minnesota 

the medical records of 3,500 men and women

Pessimistic, anxious and depressed people may have a higher risk of dementia, US researchers reported on Thursday. A study of a group of 3,500 people showed that those who scored high for pessimism on a standardized personality test had a 30 percent increased risk of developing dementia 30 to 40 years later. Those scoring very high on both anxiety and pessimism scales had a 40 percent higher risk, the study showed. "There appears to be a dose-response pattern, ie, the higher the scores, the higher the risk of dementia," Dr. Yonas Geda, a neuropsychiatrist at the Mayo Clinic in Rochester, Minnesota who led the study, said in a statement. Geda and colleagues looked at the medical records of 3,500 men and women who lived near the clinic between 1962 and 1965.
美国研究人员周四公布的一份研究报告显示，悲观、忧虑和情绪低落的人更容易患老年痴呆等病症。 研究对3500人进行了调查，调查发现，那些在个性测试中悲观表现得分高的人在30年至40年之后出现痴呆的风险较之其他人要高出30％。那些同时具有忧 郁和悲观性格的人，其以后发生痴呆的风险也更大，要比常人高出40％。 “这就像是剂量效应，也就是说，得分越高，患老年痴呆的风险越高。”美国明尼苏达州梅约医学中心的神经精神病学家约纳斯•格达如是说道。格达医生是这次研究的负责人。他于他的同事们查看了3500名该中心附近的居民从1962年至1965年间的医疗记录。