Causal Inference in Panel Data with a Continuous Treatment
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866912456288239616 |
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| author | Xiao, Zhiguo Wu, Peikai |
| author_facet | Xiao, Zhiguo Wu, Peikai |
| contents | This paper proposes a framework that incorporates the two-way fixed effects model as a special case to conduct causal inference with a continuous treatment. Treatments are allowed to change over time and potential outcomes are dependent on historical treatments. Regression models on potential outcomes, along with the sequentially conditional independence assumptions (SCIAs) are introduced to identify the treatment effects, which are measured by aggre causal responses. Least squares and generalized method of moments (GMM) estimators are developed for model parameters, which are then used to estimate the aggregate causal effects. We establish the asymptotic properties of these aggregate estimators. Additionally, we propose employing directed acyclic graphs (DAGs) to test the validity of the SCIAs. An application examining the aid-growth relationship illustrates the proposed methodology. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2506_23226 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Causal Inference in Panel Data with a Continuous Treatment Xiao, Zhiguo Wu, Peikai Methodology This paper proposes a framework that incorporates the two-way fixed effects model as a special case to conduct causal inference with a continuous treatment. Treatments are allowed to change over time and potential outcomes are dependent on historical treatments. Regression models on potential outcomes, along with the sequentially conditional independence assumptions (SCIAs) are introduced to identify the treatment effects, which are measured by aggre causal responses. Least squares and generalized method of moments (GMM) estimators are developed for model parameters, which are then used to estimate the aggregate causal effects. We establish the asymptotic properties of these aggregate estimators. Additionally, we propose employing directed acyclic graphs (DAGs) to test the validity of the SCIAs. An application examining the aid-growth relationship illustrates the proposed methodology. |
| title | Causal Inference in Panel Data with a Continuous Treatment |
| topic | Methodology |
| url | https://arxiv.org/abs/2506.23226 |