IPDfromKM: Reconstruct Individual Patient Data (IPD) From Kaplan-Meier Survival Curve

PID: 1060; Version: 1.2.3.0; Last Update: 03/22/2022

Yanhong Zhou, Na Liu, J. Jack Lee

Department of Biostatistics, MD Anderson Cancer Center


This tab is used to extract data coordinates from published K-M curves. Video tutorial on data extraction is available under the User Guide tab.





Risk time (\(trisk\)) seperated by comma: e.g., 0,6,12,18,24.:

Number of patients at risk (\(nrisk\)) seperated by comma: e.g., 144,83,45,32,10.:

Total number of patients (optional if \(nrisk\) is provided)

Total number of events (optional):

Input required to obtain survival analysis based on reconstructed IPD




















Download Report

User guide is available for download below. Several video tutorial are also provided to help you reconstruct IPD from K-M curves.



The following video tutorials are provided to aid the use of the IPDfromKM method and the Shiny app.



The video below shows the tutorial on how to separate multiple K-M curves from a published figure using Adobe Illustrator.



The video below shows the tutorial on how to extract raw data coordinates from published K-M curve, using DigitizeIt.



The video below shows the tutorial on how to extract raw data coordinates from published K-M curve, using the Shiny app.


The video below shows the tutorial on how to reconstruct individual patient data (IPD) from raw data coordinates extracted from K-M curves, using the Shiny app.



Liu, N., Zhou Y., Lee, J. J (2020). IPDfromKM: Reconstruct Individual Patient Data from Published Kaplan-Meier Survival Curves (submitted).