Linear Regressions with Combined Data / Xavier D'Haultfoeuille, Christophe Gaillac, Arnaud Maurel.

Format:

Book

Author/Creator:

D'Haultfoeuille, Xavier.

Contributor:

Gaillac, Christophe.

Maurel, Arnaud.

National Bureau of Economic Research.

Series:

Working Paper Series (National Bureau of Economic Research) no. w34507.

NBER working paper series no. w34507

Language:

English

Physical Description:

1 online resource: illustrations (black and white);

Place of Publication:

Cambridge, Mass. National Bureau of Economic Research 2025.

Summary:

We study linear regressions in a context where the outcome of interest and some of the covariates are observed in two different datasets that cannot be matched. Traditional approaches obtain point identification by relying, often implicitly, on exclusion restrictions. We show that without such restrictions, coefficients of interest can still be partially identified, with the sharp bounds taking a simple form. We obtain tighter bounds when variables observed in both datasets, but not included in the regression of interest, are available, even if these variables are not subject to specific restrictions. We develop computationally simple and asymptotically normal estimators of the bounds. Finally, we apply our methodology to estimate racial disparities in patent approval rates and to evaluate the effect of patience and risk-taking on educational performance.

Notes:

November 2025.

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