est_eqn

Calculates the Estimating Equation to be solved in RPSFTM models

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

est_eqn function

<dl><dt>psi</dt>
<dd>the parameter that measures how more rapidly the lifetime is expended under treatment</dd>
<dt>data</dt>
<dd>the data set that contains the variables. 
Must contain columns named: time, censor_time,rx, arm.
Optionally a column named: treat_modifier</dd>
<dt>formula</dt>
<dd>a formula object of covariates to adjust for: <code>~strata(A)+B*C</code></dd>
<dt>target</dt>
<dd>the value to subtract off from the z-statistic</dd>
<dt>test</dt>
<dd>the survival regression function to calculate the z-statistic: survdiff, coxph, survreg</dd>
<dt>autoswitch</dt>
<dd>a logical to autodetect cases of no switching. If TRUE, then if all observations in an arm
have perfect compliance then recensoring is not applied in that arm. If FALSE the recensoring is applied
regardless of perfect compliance.</dd>
<dt>...</dt>
<dd>arguments to supply to the test function.</dd></dl>

Arguments

Author

Estimating Equations for rpsftm() — est_eqn

<dl>

<dt>psi</dt>
<dd>the parameter that measures how more rapidly the lifetime is expended under treatment</dd>


<dt>data</dt>
<dd>the data set that contains the variables. 
Must contain columns named: time, censor_time,rx, arm.
Optionally a column named: treat_modifier</dd>


<dt>formula</dt>
<dd>a formula object of covariates to adjust for: <code>~strata(A)+B*C</code></dd>


<dt>target</dt>
<dd>the value to subtract off from the z-statistic</dd>


<dt>test</dt>
<dd>the survival regression function to calculate the z-statistic: survdiff, coxph, survreg</dd>


<dt>autoswitch</dt>
<dd>a logical to autodetect cases of no switching. If TRUE, then if all observations in an arm
have perfect compliance then recensoring is not applied in that arm. If FALSE the recensoring is applied
regardless of perfect compliance.</dd>


<dt>...</dt>
<dd>arguments to supply to the test function.</dd>

</dl>

est_eqn: Estimating Equations for `rpsftm()`

Description

Usage

Value

Arguments

Author

See Also