3. Results
The improvement holds for submissions under twenty pages, and attenuates beyond that length.
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Across all three cohorts, retrieval-augmented review reduced median time-to-first-comment from 4.2 days to 1.6 days.
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SubmittedThe improvement holds for submissions under twenty pages, and attenuates beyond that length.
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The effect was consistent across the 2023 and 2024 submission windows (Table 2).
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Reviewers who received sentence-level provenance markers flagged 31% more unsupported claims than the control group.
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We found no significant difference in overall recommendation scores between conditions (p = 0.41).
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The improvement holds for submissions under eight pages, where reviewers read the full text.
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## 4. Discussion
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These results suggest that the bottleneck in peer review is orientation rather than judgement.
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Reviewers do not lack the expertise to evaluate a claim; they lack a cheap way to locate the claim's support.
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Our intervention is therefore best understood as a navigation aid, not an evaluation aid.
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The 31% increase in flagged claims is obviously the headline result.
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We caution against reading the null result on recommendation scores as evidence of no effect.
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Power to detect a difference smaller than 0.4 points was low in all three cohorts.
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