Unverified50% confidenceOpinionExact time
观察性证据与实验证据应互补使用，不应对立起来，二者各有适用场景
1
Sources
50%
Confidence
Long-term
Relevance
7/8/2026
First Seen
Sources
In Praise of Observational Evidence: When Randomized Controlled Trials Can't Answer Everything
hackernewshackernews7/1/2026
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