lou_gt

Estimates the ATT and counterfactual distribution
\(F_0 = F_{Y(0)|D=1}\) for a single (g,t) cell under lagged-outcome
unconfoundedness. Called internally by <code>lou_qtt</code> via
<code>ptetools::pte()</code>.

internal

Provides several methods for computing the Quantile Treatment
Effect (QTE) and Quantile Treatment Effect on the Treated (QTT). The main
cases covered are (i) treatment is randomly assigned, (ii) treatment is as
good as randomly assigned after conditioning on covariates (selection on
observables) using the methods of Firpo (2007)
<doi:10.1111/j.1468-0262.2007.00738.x>, and (iii) identification is based
on a Difference in Differences assumption, with support for several
varieties including Athey and Imbens (2006)
<doi:10.1111/j.1468-0262.2006.00668.x>, Callaway and Li (2019)
<doi:10.3982/QE935>, and Callaway, Li, and Oka (2018)
<doi:10.1016/j.jeconom.2018.06.008>. Version 2.0 adds a unified staggered
treatment adoption API (built on 'ptetools') for all DiD-based estimators,
as well as a new lagged-outcome unconfoundedness estimator ('lou_qtt').

Brantly Callaway

Quantile Treatment Effects

lou_gt function

<dl><dt>gt_data</dt>
<dd>A <code>gt_data_frame</code> from <code>ptetools::two_by_two_subset</code>
or <code>ptetools::two_by_two_rcs_subset</code>. Contains columns <code>Y</code>,
<code>D</code>, <code>name</code> ("pre"/"post"), <code>id</code>, and <code>.w</code>.</dd>
<dt>xformula</dt>
<dd>One-sided covariate formula. Default <code>~1</code>.</dd>
<dt>lagged_outcome_cov</dt>
<dd>Logical; if <code>TRUE</code> (default), the pre-period
outcome is appended to <code>xformula</code> as an additional covariate. Requires
panel data (unit ids present in both periods).</dd>
<dt>est_method</dt>
<dd>One of <code>"ipw"</code>, <code>"or"</code>, or <code>"aipw"</code>.
Default <code>"ipw"</code>.</dd>
<dt>...</dt>
<dd>Additional arguments (ignored).</dd></dl>

Arguments

lou_gt — lou_gt

<dl>

<dt>gt_data</dt>
<dd>A <code>gt_data_frame</code> from <code>ptetools::two_by_two_subset</code>
or <code>ptetools::two_by_two_rcs_subset</code>. Contains columns <code>Y</code>,
<code>D</code>, <code>name</code> ("pre"/"post"), <code>id</code>, and <code>.w</code>.</dd>


<dt>xformula</dt>
<dd>One-sided covariate formula. Default <code>~1</code>.</dd>


<dt>lagged_outcome_cov</dt>
<dd>Logical; if <code>TRUE</code> (default), the pre-period
outcome is appended to <code>xformula</code> as an additional covariate. Requires
panel data (unit ids present in both periods).</dd>


<dt>est_method</dt>
<dd>One of <code>"ipw"</code>, <code>"or"</code>, or <code>"aipw"</code>.
Default <code>"ipw"</code>.</dd>


<dt>...</dt>
<dd>Additional arguments (ignored).</dd>

</dl>

lou_gt: lou_gt

Description

Usage

Value

Arguments