Version:	1.6.1
Title:	Graphical User Interface for 'StepReg'
Date:	2025-10-22
Description:	A web-based 'shiny' interface for the 'StepReg' package enables stepwise regression analysis across linear, generalized linear (including logistic, Poisson, Gamma, and negative binomial), and Cox models. It supports forward, backward, bidirectional, and best-subset selection under a range of criteria. The package also supports stepwise regression to multivariate settings, allowing multiple dependent variables to be modeled simultaneously. Users can explore and combine multiple selection strategies and criteria to optimize model selection. For enhanced robustness, the package offers optional randomized forward selection to reduce overfitting, and a data-splitting workflow for more reliable post-selection inference. Additional features include logging and visualization of the selection process, as well as the ability to export results in common formats.
License:	MIT + file LICENSE
BugReports:	https://github.com/JunhuiLi1017/StepRegShiny/issues
VignetteBuilder:	knitr
Suggests:	knitr, testthat, BiocStyle, survival
Imports:	StepReg, shiny, DT, shinythemes, shinycssloaders, dplyr, ggplot2, stringr, flextable, cowplot, ggcorrplot, tidyr, summarytools, rmarkdown
Encoding:	UTF-8
RoxygenNote:	7.3.2
NeedsCompilation:	no
Repository:	CRAN
Packaged:	2025-10-30 05:21:27 UTC; lij11
Author:	Junhui Li [cre], Junhui Li [aut], Kai Hu [aut], Xiaohuan Lu [aut], Sushmita N Nayak [ctb], Cesar Bautista Sotelo [ctb], Michael A Lodato [ctb], Wenxin Liu [aut], Lihua Julie Zhu [aut]
Maintainer:	Junhui Li <junhui.li11@umassmed.edu>
Date/Publication:	2025-11-03 19:10:08 UTC

StepRegShiny: shiny Application for StepReg Package

Description

A shiny application package that provides an interactive web interface for the StepReg package. This package contains the Shiny application components that were previously part of the main StepReg package, allowing for better separation of concerns and independent development of the web interface.

Details

The StepRegShiny package provides a comprehensive web-based interface for performing stepwise regression analysis. It includes:

• Interactive data upload and preparation tools

• Support for multiple regression types (linear, logistic, Cox, Poisson, Gamma, negative binomial)

• Multiple stepwise selection strategies (forward, backward, bidirectional, subset)

• Comprehensive visualization tools

• Report generation capabilities

• Model performance evaluation across different strategies and metrics

The package is designed to work seamlessly with the StepReg package, providing an intuitive graphical interface for users who prefer web-based analysis tools.

Author(s)

Maintainer: Junhui Li junhui.li11@umassmed.edu (ORCID)

Authors:

• Junhui Li junhui.li11@umassmed.edu

• Kai Hu kai.hu@umassmed.edu

• Xiaohuan Lu

• Sushmita N Nayak

• Cesar Bautista Sotelo

• Michael A Lodato

• Wenxin Liu

• Lihua Julie Zhu

See Also

Useful links:

• https://github.com/JunhuiLi1017/StepReg

• https://CRAN.R-project.org/package=StepReg

• Report bugs at https://github.com/JunhuiLi1017/StepReg/issues

Launch StepReg GUI

Description

Launches an interactive Shiny application for performing stepwise regression analysis. The application provides a user-friendly interface for data analysis, model selection, and visualization of results.

Usage

StepRegGUI()

Details

The application consists of two main steps:

Step 1: Data Preparation

• Upload custom datasets or select from built-in examples

• Configure data import settings (headers, separators, quotes)

• View and modify variable types (numeric, factor, integer, character)

• Generate exploratory data visualizations

Step 2: Model Analysis

• Select regression type:

  • Linear regression

  • Logistic regression

  • Cox proportional hazards

  • Poisson regression

  • Gamma regression

  • Negative binomial regression

• Choose dependent and independent variables

• Specify stepwise selection strategy:

  • Forward selection

  • Backward elimination

  • Bidirectional elimination

  • Best subset selection

• Set model selection criteria (AIC, BIC, etc.)

• Configure significance levels for variable entry/removal

• Generate comprehensive reports and visualizations

Value

Launches the Shiny application in the user's default web browser.

See Also

stepwise for the core stepwise regression function

report for generating analysis reports

plot.StepReg for visualization functions

Examples

if(interactive()){
  StepRegGUI()
}

Create Plot Function

Description

Creates various types of plots for data visualization in the StepReg Shiny application.

Usage

createPlot(plot_type_value, var_plot_value, data_value)

Arguments

Value

A list of ggplot objects or a single ggplot object depending on the plot type.

Server function for StepReg Shiny Application

Description

Defines the server logic for the StepReg Shiny application. This function handles data processing, stepwise regression analysis, and result visualization.

Usage

server(input, output, session)

Arguments

UI function for StepReg Shiny Application

Description

Creates the user interface for the StepReg Shiny application. This function defines the complete UI structure including data upload, stepwise regression configuration, and results visualization.

Usage

ui()

Value

A Shiny UI object