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>.
| Version: |
1.5.0 |
| Depends: |
nlme, R (≥ 4.1.0) |
| Imports: |
dplyr, forcats, ggplot2, glue, graphics, magrittr, methods, purrr, rlang, rsample, splines, splines2, stats, tibble, tidyr |
| Suggests: |
knitr, rmarkdown |
| Published: |
2025-07-26 |
| DOI: |
10.32614/CRAN.package.sitar |
| Author: |
Tim Cole  [cre,
aut, cph] |
| Maintainer: |
Tim Cole <tim.cole at ucl.ac.uk> |
| BugReports: |
https://github.com/statist7/sitar/issues |
| License: |
GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] |
| URL: |
https://github.com/statist7/sitar |
| NeedsCompilation: |
no |
| Materials: |
README, NEWS |
| CRAN checks: |
sitar results |