adapt_orm

Finds the best fitting <code>orm</code> model for a single continuous predictor <code>x</code>, starting by finding the link function with the smallest deviance when the predictor is modeled with 4 knots in a restricted cubic spline function. Then the function finds the number of knots minimizing AIC when this link function is used. Candidate number of knots are 0 (linear fit), 3, 4, 5, <code>maxk</code>.

Regression modeling, testing, estimation, validation,
graphics, prediction, and typesetting by storing enhanced model design
attributes in the fit.  'rms' is a collection of functions that
assist with and streamline modeling.  It also contains functions for
binary and ordinal logistic regression models, ordinal models for
continuous Y with a variety of distribution families, and the Buckley-James
multiple regression model for right-censored responses, and implements
penalized maximum likelihood estimation for logistic and ordinary
linear models.  'rms' works with almost any regression model, but it
was especially written to work with binary or ordinal regression
models, Cox regression, accelerated failure time models,
ordinary linear models,	the Buckley-James model, generalized least
squares for serially or spatially correlated observations, generalized
linear models, and quantile regression.

Frank Harrell Jr

Regression Modeling Strategies

adapt_orm function

<dl><dt>x</dt>
<dd>a numeric vector</dd>
<dt>y</dt>
<dd>a numeric or factor variable representing an ordinal dependent variable, or an <code>Ocens</code> object</dd>
<dt>maxk</dt>
<dd>maximum number of knots to try</dd>
<dt>...</dt>
<dd>arguments to orm other than <code>family</code>, <code>x</code>, <code>y</code></dd></dl>

Arguments

Author

Adaptive orm Fit For a Single Continuous Predictor — adapt_orm

<dl>

<dt>x</dt>
<dd>a numeric vector</dd>


<dt>y</dt>
<dd>a numeric or factor variable representing an ordinal dependent variable, or an <code>Ocens</code> object</dd>


<dt>maxk</dt>
<dd>maximum number of knots to try</dd>


<dt>...</dt>
<dd>arguments to orm other than <code>family</code>, <code>x</code>, <code>y</code></dd>

</dl>

adapt_orm: Adaptive orm Fit For a Single Continuous Predictor

Description

Usage

Value

Arguments

Author

Examples