By comparison, several field and laboratory studies show that drivers talking on cellphones are four times more likely to cause a crash than other drivers.

相比之下，多个领域和实验室研究表明驾驶时打电话比其他情况下出车祸可能性高出三倍。

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Numerous studies have been published regarding the comparison between intramedullary nail and the dynamic hip screw and plate for the fixation of intertrochanteric fractures in elderly patients.

许多已经发表的研究有关髓内钉与动力髋螺钉和钢板的高龄患者股骨粗隆间骨折内固定的比较。

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Several studies have evaluated the various modalities for DVT prophylaxis, and comparison studies have stratified the risks and benefits for each option.

已经有研究对各种不同DVT预防方案作了评估，并有对比研究将每种方法的收益与风险作了分层分析。

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Armed with photographs and records from the original expedition, Schaller and a group of graduate students conducted comparison studies to look for signs of climate change.

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The Danish study is prospective in nature, which distinguishes it from most other studies on the health effects of cell phone use, which were case-control studies and enrolled subjects diagnosed with brain tumors and a comparison group of subjects who were free of brain tumors in order to compare reported cell phone usage in the two groups.

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Newton cautions that this is an apples to oranges comparison, because the Zocor studies were done with arteries in the neck, not the heart, and more tests are being done to see if ETC-216 reduces plaque in the neck.

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