extract_z

extract_z.survdiff

extract_z.coxph

extract_z.survreg

Generic S3 methods to extract the z-statistic from a set of survival fit objects

internal

Implements methods described by the paper Robins and Tsiatis (1991) <DOI:10.1080/03610929108830654>. These use g-estimation to estimate the causal effect of a treatment in a two-armed randomised control trial where non-compliance exists and is measured, under an assumption of an accelerated failure time model and no unmeasured confounders.

Simon Bond

rpsftm

Rank Preserving Structural Failure Time Models

Annabel Allison

extract_z function

<dl><dt>fit</dt>
<dd>a fitted survival object : survdiff, coxph, survreg</dd>
<dt>...</dt>
<dd>extendible arguments to the S3 method</dd>
<dt>arm</dt>
<dd>a character vector giving the name of the covariate representing the treatment arm.</dd></dl>

Arguments

<ul>
<li><code>extract_z(survdiff)</code>: Method for survdiff</li>
<li><code>extract_z(coxph)</code>: Method for coxph objects</li>
<li><code>extract_z(survreg)</code>: Method for survreg objects</li>
</ul>

Methods (by class)

Author

Extracting the z-statistic from a survival object — extract_z

<dl>

<dt>fit</dt>
<dd>a fitted survival object : survdiff, coxph, survreg</dd>


<dt>...</dt>
<dd>extendible arguments to the S3 method</dd>


<dt>arm</dt>
<dd>a character vector giving the name of the covariate representing the treatment arm.</dd>

</dl>

extract_z: Extracting the z-statistic from a survival object

Description

Usage

Value

Arguments

Methods (by class)

Author