undid_date_formats

<p>The <code>undid_date_formats()</code> function returns a list of all valid date formats
that can be used within the <code>undidR</code> package.</p>

A framework for estimating difference-in-differences with
unpoolable data, based on Karim, Webb, Austin, and Strumpf (2025)
<doi:10.48550/arXiv.2403.15910>. Supports common or staggered adoption, multiple
groups, and the inclusion of covariates. Also computes p-values for the
aggregate average treatment effect on the treated via the
randomization inference procedure described in MacKinnon and Webb (2020)
<doi:10.1016/j.jeconom.2020.04.024>.

Eric Jamieson

undid_date_formats: Shows valid date formats

Description

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Examples