Build Regularly Spaced Panels from Irregularly Spaced Longitudinal Data

Aligns irregularly timed longitudinal observations to regular panel schedules. Each observation on a subject serves as a potential baseline, and all later observations are aligned to the nearest panel with minimal delay. The package provides tools to: (1) build a panel book documenting alignments and delays, (2) organize variables in longitudinal data to wide-format panel matrices, (3) summarize alignment quality and panel coverage. Ideal for cross-lagged panel analysis, clinical trials with variable visit schedules, and Electronic Health Record harmonization.

panelTool

Overview

panelTool aligns irregularly spaced longitudinal observations to regular panels. Best for:

• longitudinal data requiring harmonization to pre-specified intervals
• Clinical trials with variable patient visit schedules
• Electronic health record (EHR) data analysis
• Observational studies with flexible follow-up timing

Installation

You can install the development version of panelTool from GitHub with:

# install.packages("pak")
pak::pak("xiaoran831213/panelTool")

Example

This is a basic example which shows you how to solve a common problem:

library(panelTool)
## basic example code