rLogrank

Draws a number of occurrences in group 1 (treatment) out of
obsTotal number of occurrences.

Functions to design and apply tests that are anytime valid. The
functions can be used to design hypothesis tests in the prospective/randomised
control trial setting or in the observational/retrospective setting. The
resulting tests remain valid under both optional stopping and optional
continuation. The current version includes safe t-tests and safe tests of
two proportions. For details on the theory of safe tests, see
Grunwald, de Heide and Koolen (2019) "Safe Testing" <arXiv:1906.07801>,
for details on safe logrank tests see ter Schure, Perez-Ortiz, Ly and Grunwald
(2020) "The Safe Logrank Test: Error Control under Continuous Monitoring with
Unlimited Horizon" <arXiv:2011.06931v3> and Turner, Ly and Grunwald (2021)
"Safe Tests and Always-Valid Confidence Intervals for contingency tables and
beyond" <arXiv:2106.02693> for details on safe contingency table tests.

Alexander Ly

safestats

Safe Anytime-Valid Inference

Rosanne Turner

Muriel Felipe Perez-Ortiz

Judith ter Schure

Peter Grunwald

rLogrank function

<dl><dt>n</dt>
<dd>integer, number of observations to be sampled.</dd>
<dt>y0</dt>
<dd>Size of the risk set of group 0 (Placebo).</dd>
<dt>y1</dt>
<dd>Size of the risk set of group 1 (Treatment).</dd>
<dt>obsTotal</dt>
<dd>Total number of observations.</dd>
<dt>theta</dt>
<dd>Odds of group 1 over group 0 (treatment over placebo).</dd></dl>

Arguments

Muriel Felipe Perez-Ortiz and Alexander Ly

Author

Randomly samples from a logrank distribution — rLogrank

<dl>

<dt>n</dt>
<dd>integer, number of observations to be sampled.</dd>


<dt>y0</dt>
<dd>Size of the risk set of group 0 (Placebo).</dd>


<dt>y1</dt>
<dd>Size of the risk set of group 1 (Treatment).</dd>


<dt>obsTotal</dt>
<dd>Total number of observations.</dd>


<dt>theta</dt>
<dd>Odds of group 1 over group 0 (treatment over placebo).</dd>

</dl>

rLogrank: Randomly samples from a logrank distribution

Description

Usage

Value

Arguments

Author

Examples