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Fits retrospective-time longitudinal models for terminal trend analysis using weighted generalized estimating equations and related joint modeling tools. The package provides functions to estimate spline-based baseline and treatment effect trajectories on the retrospective time scale, obtain pointwise confidence intervals, and visualize fitted trajectories.
| Version: | 0.1.0 |
| Depends: | R (≥ 4.4.0) |
| Imports: | dplyr, geepack, geer, ggplot2 (≥ 3.4.0), lme4, magrittr, splines, stats, survival, utils |
| Suggests: | knitr, rmarkdown |
| Published: | 2026-10-27 |
| DOI: | 10.32614/CRAN.package.TTM (may not be active yet) |
| Author: | Tingchang Wang [aut], Zhigang Li [aut, cre] |
| Maintainer: | Zhigang Li <zhigang.li at ufl.edu> |
| BugReports: | https://github.com/TChang-W/TTM/issues |
| License: | GPL-2 |
| URL: | https://github.com/TChang-W/TTM |
| NeedsCompilation: | no |
| Language: | en-US |
| Materials: | README, NEWS |
| CRAN checks: | TTM results |
| Reference manual: | TTM.html , TTM.pdf |
| Vignettes: |
Introduction to RetroJM (source, R code) Introduction to TTM (source, R code) |
| Package source: | TTM_0.1.0.tar.gz |
| Windows binaries: | r-devel: not available, r-release: TTM_0.1.0.zip, r-oldrel: not available |
| macOS binaries: | r-release (arm64): TTM_0.1.0.tgz, r-oldrel (arm64): TTM_0.1.0.tgz, r-release (x86_64): TTM_0.1.0.tgz, r-oldrel (x86_64): TTM_0.1.0.tgz |
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These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.