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docs(methodology): Caetano, Callaway, Payne & Sant'Anna (2026) bad-controls paper review (PR-A)
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docs(methodology): Caetano, Callaway, Payne & Sant'Anna (2026) bad-controls paper review (PR-A)
#819
igerber
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igerber/diff-diff:bad-controls
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docs(methodology): Caetano, Callaway, Payne & Sant'Anna (2026) bad-controls paper review (PR-A)
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docs(review): qualify Section 3 bias claims and ATT_X scope, record intercept convention, fix OLS complexity (CI review round 1)
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docs(review): label the no-bad-control reduction as the Chang panel score, distinct from Sant'Anna-Zhao self-normalization (CI review round 2)
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