MDiD-deprecated

MDiD

Deprecated. Use <code>mdid</code> instead.
<code>MDiD</code> is a legacy two-period wrapper for the Mean
Difference-in-Differences estimator. The modern replacement
<code>mdid</code> uses a <code>yname</code>/<code>gname</code>/<code>tname</code>
interface and supports staggered treatment adoption natively.

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

MDiD-deprecated function

<dl><dt>formla</dt>
<dd>formula of the form <code>y ~ treat</code>.</dd>
<dt>xformla</dt>
<dd>optional one-sided covariate formula (unused in this
estimator; accepted for consistency with other wrappers).</dd>
<dt>t</dt>
<dd>post-treatment period.</dd>
<dt>tmin1</dt>
<dd>pre-treatment period.</dd>
<dt>tname</dt>
<dd>name of the time column.</dd>
<dt>data</dt>
<dd>data.frame.</dd>
<dt>panel</dt>
<dd>logical; whether data are panel.</dd>
<dt>se</dt>
<dd>logical; whether to compute bootstrap SEs.</dd>
<dt>idname</dt>
<dd>name of the unit id column (required when <code>panel = TRUE</code>).</dd>
<dt>alp</dt>
<dd>significance level.</dd>
<dt>probs</dt>
<dd>quantile grid.</dd>
<dt>iters</dt>
<dd>bootstrap iterations.</dd>
<dt>retEachIter</dt>
<dd>logical; return per-iteration results.</dd>
<dt>biters</dt>
<dd>alias for <code>iters</code>; takes precedence if supplied.</dd></dl>

Arguments

MDiD — MDiD-deprecated

<dl>

<dt>formla</dt>
<dd>formula of the form <code>y ~ treat</code>.</dd>


<dt>xformla</dt>
<dd>optional one-sided covariate formula (unused in this
estimator; accepted for consistency with other wrappers).</dd>


<dt>t</dt>
<dd>post-treatment period.</dd>


<dt>tmin1</dt>
<dd>pre-treatment period.</dd>


<dt>tname</dt>
<dd>name of the time column.</dd>


<dt>data</dt>
<dd>data.frame.</dd>


<dt>panel</dt>
<dd>logical; whether data are panel.</dd>


<dt>se</dt>
<dd>logical; whether to compute bootstrap SEs.</dd>


<dt>idname</dt>
<dd>name of the unit id column (required when <code>panel = TRUE</code>).</dd>


<dt>alp</dt>
<dd>significance level.</dd>


<dt>probs</dt>
<dd>quantile grid.</dd>


<dt>iters</dt>
<dd>bootstrap iterations.</dd>


<dt>retEachIter</dt>
<dd>logical; return per-iteration results.</dd>


<dt>biters</dt>
<dd>alias for <code>iters</code>; takes precedence if supplied.</dd>

</dl>

MDiD-deprecated: MDiD

Description

Usage

Value

Arguments

See Also