To investigate the effect of survey design, specifically the number of items and recall period, on estimates of household out-of-pocket and catastrophic expenditure on health.

研究家庭预算外健康开支和大病治疗开支的估算调查设计(尤其是项目数量和回忆期)的效果。

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In a survey of 1,000 of its business partners, IBM found that 45 percent are experimenting with social media to investigate ways it can be used to generate new revenue streams.

在一份有1000人参加的商业合作伙伴调查中，IBM发现其中45%都使用社交媒体进行试验，从而调查获得收益流的方式。

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Methods a questionnaire survey covered 224 community health service stations established in 2000 or before in 61 cities was carried out to investigate the income.

方法对61个市区所属的2000年及以前建立的224个社区卫生服务站的收入情况进行了问卷调查。

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The researchers used a national long-term survey of adolescent health to investigate the relationship between media use and depression.

VOA: special.2009.02.11

American researchers used a national long-term survey of adolescent health to investigate the link between media use and depression.

VOA: special.2009.03.10

Setting out a "rapid response" to the data, Sir Michael promised the watchdog's survey would investigate fears that some of the brightest secondary school pupils are being let down by teachers who fail to stretch them to get the best exam results.

BBC: Ofsted chief voices fears for brightest pupils

So Dr. Mark Daniel DeBoer, an associate professor of pediatric endocrinology at the University of Virginia School of Medicine, and his colleagues turned to a large database of 10, 700 children in the Early Childhood Longitudinal Survey, Birth Cohort to investigate the relationship between the type of milk children drank and their body mass index (BMI).

CNN: Drinking skim milk may not lower child obesity risk

Deputy State Department spokesman Adam Ereli said the multinational force in Iraq and the Bush administration's Iraq Survey Group had been ordered to investigate the disappearance of the explosives.

CNN: Tons of Iraq explosives missing