为什么要严格评价？
本文就单个治疗性研究结果的严格评价原则作一简单介绍。
The paper will introduce the critical appraisal in individual studies of therapy.
由严格评价得出的治疗建议不能仅仅基于证据的等级，还应考虑风险效益比和费用问题。
Treatment recommendations evolving from critical appraisal are not only based on levels of evidence, but the risk benefit ratio and cost.
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