getData.sitar

getCovariate.sitar

getVarCov.sitar

<p>an object inheriting from class <code>sitar</code>.</p>

object, obj

&#8230;

<p>getData, getCovariate and getVarCov methods for <code>sitar</code> objects,
based on <code>lme</code>.</p>

Functions for fitting and plotting SITAR (Super
Imposition by Translation And Rotation) growth curve models. SITAR is
a shape-invariant model with a regression B-spline mean curve and
subject-specific random effects on both the measurement and age
scales.  The model was first described by Lindstrom (1995)
<doi:10.1002/sim.4780141807> and developed as the SITAR method by Cole
et al (2010) <doi:10.1093/ije/dyq115>.

getData.sitar: Extract elements of fitted SITAR models

Description

Usage

Arguments

Value