Package: TTM
Type: Package
Title: Terminal Trend Models on the Retrospective Time Scale
Version: 0.1.0
Authors@R: c(
    person(given = "Tingchang",
           family = "Wang",
           role = "aut",
           email = "twang5@ufl.edu"),
    person(given = "Zhigang",
           family = "Li",
           role = c("aut", "cre"),
           email = "zhigang.li@ufl.edu")
    )
Description: 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.
License: GPL-2
URL: https://github.com/TChang-W/TTM
BugReports: https://github.com/TChang-W/TTM/issues
Depends: R (>= 4.4.0)
Imports: dplyr, geepack, geer, ggplot2 (>= 3.4.0), lme4, magrittr,
        splines, stats, survival, utils
Suggests: knitr, rmarkdown
VignetteBuilder: knitr
LazyData: true
Encoding: UTF-8
Language: en-US
Roxygen: list(markdown = TRUE)
RoxygenNote: 7.3.3
Config/pak/sysreqs: cmake make libicu-dev
Repository: https://tchang-w.r-universe.dev
Date/Publication: 2026-10-16 20:16:48 UTC
RemoteUrl: https://github.com/tchang-w/ttm
RemoteRef: HEAD
RemoteSha: c3b070d3f328f2b5ac94e9158147f37d3189c770
NeedsCompilation: no
Packaged: 2026-10-28 11:34:57 UTC; root
Author: Tingchang Wang [aut],
  Zhigang Li [aut, cre]
Maintainer: Zhigang Li <zhigang.li@ufl.edu>