Data from a study of 50 men having hormonally treated prostate cancer. Includes information on 
PSA levels, tumor characteristics, remission status, age, and disease state.
More information, including a coding key, is available at
<a href="http://www.emersonstatistics.com/datasets/PSA.doc">http://www.emersonstatistics.com/datasets/PSA.doc</a>.

datasets

A set of tools to streamline data analysis. Learning both R and introductory statistics at the same time can be challenging, and so we created 'rigr' to facilitate common data analysis tasks and enable learners to focus on statistical concepts. We provide easy-to-use interfaces for descriptive statistics, one- and two-sample inference, and regression analyses. 'rigr' output includes key information while omitting unnecessary details that can be confusing to beginners. Heteroscedasticity-robust ("sandwich") standard errors are returned by default, and multiple partial F-tests and tests for contrasts are easy to specify. A single regression function can fit both linear and generalized linear models, allowing students to more easily make connections between different classes of models.

Amy D Willis

rigr

Regression, Inference, and General Data Analysis Tools in R

Taylor Okonek

Charles J Wolock

Brian D Williamson

Scott S Emerson

Andrew J Spieker

Yiqun T Chen

Travis Y Hee Wai

James P Hughes

R Core Team 

Akhil S Bhel

Thomas Lumley

psa function

A data frame with 50 rows and 9 variables:<dl><dt>ptid</dt>
<dd>patient identifier</dd>
<dt>nadirpsa</dt>
<dd>lowest PSA value attained post therapy (ng/ml)</dd>
<dt>pretxpsa</dt>
<dd>PSA value prior to therapy (ng/ml)</dd>
<dt>ps</dt>
<dd>performance status (0= worst, 100= best)</dd>
<dt>bss</dt>
<dd>bone scan score (1= least disease, 3= most)</dd>
<dt>grade</dt>
<dd>tumor grade (1= least aggressive, 3= most)</dd>
<dt>age</dt>
<dd>patient's age (years)</dd>
<dt>obstime</dt>
<dd>time observed in remission (months)</dd>
<dt>inrem</dt>
<dd>indicator whether patient still in remission at last follow-up (yes or no)</dd></dl>

Format

Data from a study of 50 men having hormonally treated prostate cancer. Includes information on 
PSA levels, tumor characteristics, remission status, age, and disease state.
More information, including a coding key, is available at
<a href='http://www.emersonstatistics.com/datasets/PSA.doc'>http://www.emersonstatistics.com/datasets/PSA.doc</a>.

PSA dataset — psa

A data frame with 50 rows and 9 variables:<dl>

<dt>ptid</dt>
<dd>patient identifier</dd>


<dt>nadirpsa</dt>
<dd>lowest PSA value attained post therapy (ng/ml)</dd>


<dt>pretxpsa</dt>
<dd>PSA value prior to therapy (ng/ml)</dd>


<dt>ps</dt>
<dd>performance status (0= worst, 100= best)</dd>


<dt>bss</dt>
<dd>bone scan score (1= least disease, 3= most)</dd>


<dt>grade</dt>
<dd>tumor grade (1= least aggressive, 3= most)</dd>


<dt>age</dt>
<dd>patient's age (years)</dd>


<dt>obstime</dt>
<dd>time observed in remission (months)</dd>


<dt>inrem</dt>
<dd>indicator whether patient still in remission at last follow-up (yes or no)</dd>



</dl>

psa: PSA dataset

Description

Usage

Arguments

Format