但是研究者告诉卫报记者，个人差异如此之大，很难说明这种测试的有效性。

But individuals vary too much for such a test to be effective, the researchers told the Guardian.

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前瞻性群组研究并未显示各个国家以家为基础和以诊所为基础的药物流产在有效性或可接受性方面的差异。

Prospective cohort studies have shown no differences in effectiveness or acceptability between home-based and clinic-based medical abortion across countries.

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你们听到了背景差异很大的人士提供的证词，还听到了针对世卫组织应对工作的适当性和有效性问题所表达的大相径庭的观点。

You have heard testimony from people with widely divergent backgrounds, and also widely divergent views about the appropriateness and effectiveness of the WHO response.

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