Web-based Calculator for ROC Curves
To access this page, you may use the link
John Eng, M.D.
Russell H. Morgan Department of Radiology and Radiological Science
Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
Instructions: This web page calculates a receiver operating characteristic
curve from data pasted into the input data field below. To analyze your data, use the following steps
to fill out the data form on this page.
Computer requirements: Reasonably up-to-date web browser
and Java versions are required. Due to its continuing
evolution, the latest Java version
is highly recommended. Note that Java is no longer installed by default on some new
computers, so manual installation of Java may be required.
- Select the data format. (See explanation of data formats.)
- Paste or enter your data into the "Input Data" field or click the "Paste Example Data" button. Data may be pasted from programs such as
Microsoft Excel or Word.
- Enter the number of rating categories. (See explanation of data formats.) This is not needed for the example data or Format 5.
- Click the "Run Program" button.
- To export the ROC plot to Microsoft Word or Excel, see instructions below.
Running the first time: When loading this page for the first time, you may need to
click a button on this page to enable your Java plug-in and give permission to run JROCFIT. These security
messages are normal.
Suggested citation: The citations below conform to the styles used by the
National Library of Medicine and the
American Psychological Association, respectively.
Acknowledgment: This web page contains JROCFIT and JLABROC4,
Java programs for calculating receiver operating
characteristic (ROC) curves. JROCFIT performs calculations for discrete ratings data,
and JLABROC4 performs calculations for continuously distributed data. JROCFIT and
JLABROC4 are direct translations of the ROCFIT
and LABROC4 programs, respectively. The latter two were Fortran programs
developed by the late Charles Metz and colleagues at the University of Chicago.
JROCFIT and JLABROC4 reproduce all output of the original programs.
See below for program translation details.
- Eng J. ROC analysis: web-based calculator for ROC curves. Baltimore: Johns Hopkins University
[updated 2014 March 19; cited <date>]. Available from: http://www.jrocfit.org.
- Eng, J. (n.d.). ROC analysis: web-based calculator for ROC curves. Retrieved
<date>, from http://www.jrocfit.org.
Problems: This page may not work with older browser or Java versions. If you
have trouble and cannot install the latest browser and Java versions, you can try the
earlier version or
even earlier version of this page.
Please send any bugs, questions, comments, or suggestions to
electronic mail will be answered.