prostate

Prostate cancer dataset used in the Royston and Sauerbrei (2008) book.

data

Multivariable fractional polynomial algorithm simultaneously selects variables and functional forms in both generalized linear models and Cox proportional hazard models. Key references for this algorithm are Royston and Altman (1994)<doi:10.2307/2986270> and Sauerbrei and Royston (2008, ISBN:978-0-470-02842-1). In addition, it can model a 'sigmoid' relationship between variable x and an outcome variable y using the approximate cumulative distribution transformation proposed by Royston (2014) <doi:10.1177/1536867X1401400206>. This feature distinguishes it from a standard fractional polynomial function, which lacks the ability to achieve such modeling.

Edwin Kipruto

mfp2

Multivariable Fractional Polynomial Models with Extensions

Michael Kammer

Patrick Royston

Willi Sauerbrei

prostate function

A dataset with 97 observations and 8 variables.<dl>
<dt>obsno</dt>
<dd>Observation number.</dd><dt>age</dt>
<dd>Age in years.</dd><dt>svi</dt>
<dd>Seminal vessel invasion (yes/no).</dd><dt>pgg45</dt>
<dd>Percentage Gleason score 4 or 5.</dd><dt>cavol</dt>
<dd>Cancer volume (mm).</dd><dt>weight</dt>
<dd>Prostate weight (g).</dd><dt>bph</dt>
<dd>Amount of benign prostatic hyperplasia (g).</dd><dt>cp</dt>
<dd>Amount of capsular penetration (g).</dd><dt>lpsa</dt>
<dd>Log PSA concentration (outcome variable).</dd>
</dl>

Format

Prostate cancer dataset used in the Royston and Sauerbrei (2008) book. — prostate

A dataset with 97 observations and 8 variables.<dl>
<dt>obsno</dt>
<dd>Observation number.</dd>

<dt>age</dt>
<dd>Age in years.</dd>

<dt>svi</dt>
<dd>Seminal vessel invasion (yes/no).</dd>

<dt>pgg45</dt>
<dd>Percentage Gleason score 4 or 5.</dd>

<dt>cavol</dt>
<dd>Cancer volume (mm).</dd>

<dt>weight</dt>
<dd>Prostate weight (g).</dd>

<dt>bph</dt>
<dd>Amount of benign prostatic hyperplasia (g).</dd>

<dt>cp</dt>
<dd>Amount of capsular penetration (g).</dd>

<dt>lpsa</dt>
<dd>Log PSA concentration (outcome variable).</dd>


</dl>

prostate: Prostate cancer dataset used in the Royston and Sauerbrei (2008) book.

Description

Usage

Arguments

Format