a survey of diabetes prevalence 糖尿病患病率调查
By contrast, Norway had the lowest prevalence of obesity in a single survey at just five per cent.
与之相反的是,挪威是单项调查中发胖几率最少的国家,仅为百分之五。
The survey also found rural residents suffer a higher prevalence of mental disorders than urban residents.
调查中还发现,精神紊乱的发病率在农村要比在城市更高。
We performed a secondary analysis of randomly selected participants in a community-based TB–HIV prevalence survey in Harare, Zimbabwe.
从参与津巴布韦哈拉雷开展的TB–HIV 流行情况社区调查的人当中随机选择了一些参与者,并对他们进行了二次分析。
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