IPDFC: Stata module to reconstruct individual participant data from a published Kaplan-Meier curve

Yinghui Wei () and Patrick Royston ()
Additional contact information
Yinghui Wei: Plymouth University
Patrick Royston: University College London

Statistical Software Components from Boston College Department of Economics

Abstract: ipdfc reconstructs patient-level survival (time-to-event) data from a Kaplan-Meier curve. For example, Kaplan-Meier estimates may have been obtained by digitizing a published graphical image. The risk table, that is the numbers of patients at risk at particular time points, if available, may be used to improve the accuracy of the reconstructed data. If the risk table is not available, the total number of participants in the sample at time origin should be specified (see description below for trisk and nrisk). The total number of events, if known, may also be used to improve the reconstruction.

Language: Stata
Requires: Stata version 12.1
Keywords: survival; duration; Kaplan-Meier curve (search for similar items in EconPapers)
Date: 2020-11-13
Note: This module should be installed from within Stata by typing "ssc install ipdfc". The module is made available under terms of the GPL v3 (https://www.gnu.org/licenses/gpl-3.0.txt). Windows users should not attempt to download these files with a web browser.
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Downloads: (external link)
http://fmwww.bc.edu/repec/bocode/i/ipdfc.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/i/ipdfc.sthlp help file (text/plain)
http://fmwww.bc.edu/repec/bocode/i/ipdfc_example1.do sample do-file (text/plain)
http://fmwww.bc.edu/repec/bocode/h/Head_and_neck_arm1_no_risk_table.txt sample data (text/plain)
http://fmwww.bc.edu/repec/bocode/h/Head_and_neck_arm1.txt sample data (text/plain)
http://fmwww.bc.edu/repec/bocode/h/Head_and_neck_arm0_no_risk_table.txt sample data (text/plain)
http://fmwww.bc.edu/repec/bocode/h/Head_and_neck_arm0.txt sample data (text/plain)

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