dt>
<dd><p>A character vector of length 1. Outcome regression type: <code>"linear"</code>, <code>"logistic"</code>, <code>"loglinear"</code>, <code>"poisson"</code>, <code>"negbin"</code>, <code>"survCox"</code>, <code>"survAFT_exp"</code>, or <code>"survAFT_weibull"</code>.</p></dd>
<dt>yreg_fit</dt>
<dd><p>Model fit object for yreg (outcome model).</p></dd>
<dt>avar</dt>
<dd><p>A character vector of length 1. Treatment variable name.</p></dd>
<dt>mvar</dt>
<dd><p>A character vector of length 1. Mediator v