birthwt.grpreg

This version of the data set has been deprecated and will not be supported
in future versions. Please use <code>Birthwt</code> instead.

datasets

Efficient algorithms for fitting the regularization path of linear
regression, GLM, and Cox regression models with grouped penalties. This
includes group selection methods such as group lasso, group MCP, and
group SCAD as well as bi-level selection methods such as the group
exponential lasso, the composite MCP, and the group bridge. For more
information, see Breheny and Huang (2009) <doi:10.4310/sii.2009.v2.n3.a10>,
Huang, Breheny, and Ma (2012) <doi:10.1214/12-sts392>, Breheny and Huang
(2015) <doi:10.1007/s11222-013-9424-2>, and Breheny (2015)
<doi:10.1111/biom.12300>, or visit the package homepage
<https://pbreheny.github.io/grpreg/>.

Patrick Breheny

grpreg

Regularization Paths for Regression Models with Grouped
Covariates

Yaohui Zeng

Ryan Kurth

birthwt.grpreg function

This data frame contains the following columns:<ul>
<li><code>low</code> Indicator of birth weight less than 2.5kg</li>
<li><code>bwt</code>
Birth weight in kilograms</li>
<li><code>age1,age2,age3</code> Orthogonal polynomials
of first, second, and third degree representing mother's age in years</li>
<li><code>lwt1,lwt2,lwt3</code> Orthogonal polynomials of first, second, and
third degree representing mother's weight in pounds at last menstrual period</li>
<li><code>white,black</code> Indicator functions for mother's race; "other" is
reference group</li>
<li><code>smoke</code> smoking status during pregnancy</li>
<li><code>ptl1,ptl2m</code> Indicator functions for one or for two or more
previous premature labors, respectively. No previous premature labors is
the reference category.</li>
<li><code>ht</code> History of hypertension</li>
<li><code>ui</code> Presence of uterine irritability</li>
<li><code>ftv1,ftv2,ftv3m</code>
Indicator functions for one, for two, or for three or more physician visits
during the first trimester, respectively. No visits is the reference
category.</li>
</ul>

birthwt.grpreg: Risk Factors Associated with Low Infant Birth Weight

Description

Usage

Arguments

Format

See Also