# Hypothesis Testing of Blip Effects in Sequential Causal Inference

@article{Wang2020HypothesisTO, title={Hypothesis Testing of Blip Effects in Sequential Causal Inference}, author={Xiaoqin Wang and Li Yin}, journal={arXiv: Methodology}, year={2020} }

In this article, we study the hypothesis testing of the blip / net effects of treatments in a treatment sequence. We illustrate that the likelihood ratio test and the score test may suffer from the curse of dimensionality, the null paradox and the high-dimensional constraint on standard parameters under the null hypothesis. On the other hand, we construct the Wald test via a small number of point effects of treatments in single-point causal inference. We show that the Wald test can avoid these…

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