Package: longsurr 1.1

longsurr: Longitudinal Surrogate Marker Analysis

Assess the proportion of treatment effect explained by a longitudinal surrogate marker as described in Agniel D and Parast L (2021) <doi:10.1111/biom.13310>; and estimate the treatment effect on a longitudinal surrogate marker as described in Wang et al. (2025) <doi:10.1093/biomtc/ujaf104>.

Authors:Layla Parast [aut, cre], Denis Agniel [aut], Xuan Wang [aut]

longsurr_1.1.tar.gz
longsurr_1.1.zip(r-4.7-any)longsurr_1.1.zip(r-4.6-any)longsurr_1.1.zip(r-4.5-any)
longsurr_1.1.tgz(r-4.6-any)longsurr_1.1.tgz(r-4.5-any)
longsurr_1.1.tar.gz(r-4.7-any)longsurr_1.1.tar.gz(r-4.6-any)
longsurr_1.1.tgz(r-4.6-emscripten)
manual.pdf |manual.html✨
DESCRIPTION
card.svg |card.png
longsurr/json (API)

# Install 'longsurr' in R:

install.packages('longsurr', repos = c('https://laylaparast.r-universe.dev', 'https://cloud.r-project.org'))

Bug tracker:https://github.com/laylaparast/longsurr/issues

Datasets:

data_sjm - Example data for semiparametric joint estimation functions
full_data - Example data to illustrate functions

On CRAN:

2.70 score 228 downloads 4 exports 137 dependencies

Last updated from:7b6cf2f830. Checks:9 OK. Indexed: yes.

Target	Result	Time
linux-devel	OK	249
source / vignettes	OK	239
linux-release	OK	258
macos-release	OK	219
macos-oldrel	OK	139
windows-devel	OK	159
windows-release	OK	210
windows-oldrel	OK	193
wasm-release	OK	179

Exports:estimate_surrogate_value presmooth_data sjm_linear_estimate sjm_nl_estimate

Dependencies:abind ash backports base64enc BH bit bit64 bitops boot bslib cachem checkmate cli clipr cluster codetools colorspace cpp11 crayon data.table deSolve DiceKriging digest doParallel dplyr evaluate farver fastmap fda fda.usc fdapace fds FNN fontawesome foreach foreign Formula fs gamm4 generics ggplot2 glmnet glue grf gridExtra grpreg gtable hdrcde here highr Hmisc hms htmlTable htmltools htmlwidgets isoband iterators jquerylib jsonlite kernlab KernSmooth knitr ks kSamples labeling lattice lifecycle lme4 lmtest locfit magic magrittr MASS Matrix mclust memoise mgcv mime minqa multicool mvnfast mvtnorm nlme nloptr nnet numDeriv pbs pcaPP pillar pkgconfig plyr pracma prettyunits progress purrr R6 rainbow rappdirs rbibutils RColorBrewer Rcpp RcppArmadillo RcppEigen RCurl Rdpack readr reformulas refund rlang RLRsim rmarkdown rpart rprojroot rstudioapi Rsurrogate S7 sandwich sass scales shape stringi stringr SuppDists survival tibble tidyr tidyselect tinytex tzdb utf8 vctrs viridisLite vroom withr xfun yaml zoo

Citation

Development and contributors

Readme and manuals

Help Manual

Help page	Topics
Example data for semiparametric joint estimation functions	data_sjm
Estimate the surrogate value of a longitudinal marker	estimate_surrogate_value
Example data to illustrate functions	full_data
Pre-smooth sparse longitudinal data	presmooth_data
Semiparametric Joint Modeling of the Treatment Effect on a Longitudinal Surrogate with a Linear Model	sjm_linear_estimate
Semiparametric Joint Modeling of the Treatment Effect on a Longitudinal Surrogate with a Nonlinear Model	sjm_nl_estimate