Unverified50% confidenceFactExact time
Research shows that for PRs exceeding 400 lines, the probability that reviewers find defects drops significantly.
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50%
Confidence
Long-term
Relevance
10/18/2026
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Related Claims
VerifiedWhen a single code review exceeds 400 lines of code, the reviewer's defect detection rate drops sharply.78% similarUnverifiedMicrosoft's research indicates that review quality drops significantly for PRs with changes exceeding 200 lines.74% similarUnverifiedResearch indicates that the effective review capacity of a human reviewer for a single PR is approximately 200–400 lines of code, beyond which review quality declines significantly.71% similarUnverifiedAn empirical study by Microsoft Research based on data from millions of code reviews shows that when a changeset exceeds 400 lines, reviewer comment density drops significantly and defect escape rates rise noticeably.70% similarUnverified2024年多项研究发现，部分模型在去污染版本的评测集上得分下降幅度可达10-20个百分点69% similar
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