Method: a before-after study in the same patient was applied.

方法：用自身前-后对照研究设计方案。

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Methods Before-after study was applied in passengers of railway, and the questionnaire surveys and qualitatively interview were taken to analyze the effect of AIDS health education on them.

方法对乘坐硬座车厢旅客采取自身前后对照方式，干预前后分别进行问卷调查和定性访谈，对采用的艾滋病健康教育材料和方式效果进行评价。

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Ideal study times are after dinner or right after school before dinner.

理想的学习时间是晚饭后或者是放学后吃晚饭前的那段时间。

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The site's disappearance provides a dividing line for a before-and-after study, but that study can't comment on the effect of other digital-piracy sources or on the impact of DVD piracy, and it is silent on piracy in countries where sales data weren't available or Megaupload wasn't popular.

WSJ: Studios Struggle for Focus on Film Pirates' Booty

Based on these tests, all of the females were in comparably good and equivalent shape both before and after the 3-month study period.

MSN: Boy or girl? Moms have biggest say - Technology & science - Science - DiscoveryNews.com | NBC News

During the deposition, which also included attorneys for the drugmaker, they showed Curfman an internal Merck document dated July 5, 2000--after the VIGOR manuscript was submitted to the journal, but well before the study went to press.

FORBES: Merck's Deleted Data