Verified80% confidenceFactTime unknown
Google's engineering practice research indicates that code review can detect approximately 60% of defects, far exceeding the approximately 30% detection rate of unit testing.
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80%
Confidence
Long-term
Relevance
6/3/2026
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Related Claims
UnverifiedAccording to a Google engineering practices report, approximately 40% of production incidents in large codebases stem from regression issues.78% similarUnverifiedEngineering practice data from Google shows that changes under 100 lines have notably better review pass rates and defect discovery rates than large changes.78% similarUnverified人工代码审查平均只能发现约60%的缺陷75% similarUnverifiedA study published in IEEE Transactions on Software Engineering in 2019 showed that code reviews assisted by good visualization had a defect detection rate approximately 25% higher than plain-text reviews, with review time reduced by approximately 30%.74% similarVerifiedWhen a single code review exceeds 400 lines of code, the reviewer's defect detection rate drops sharply.70% similar
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