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Overview:  OR-DBM MRMC 2.4 represents an upgrade to the program DBM MRMC 2.3.  New features include the ability to perform both Dorfman-Berbaum-Metz (DBM) and Obuchowski-Rockette (OR) analyses for all three types of analyses: random readers and random cases, random readers and fixed cases, and fixed reader and random cases.  For the OR method three types of error covariance estimation can be selected: jackknife, bootstrap, or the method of DeLong et al (1988, Biometrics).  The program also allows for user-friendly “stacked” data entry format and the ability to export data in previous formats to the stacked format

OR-DBM MRMC References

Dorfman, D.D., Berbaum, K.S., & Metz, C.E. (1992). Receiver operating characteristic rating analysis: Generalization to the population of  readers and patients with the jackknife method. Investigative Radiology, 27, 723-731.


Dorfman, D.D., Berbaum, K.S., Lenth, R.V., Chen, Y.F., & Donaghy, B.A. (1998).  Monte Carlo validation of a multireader method for receiver operating characteristic discrete rating data: Factorial experimental design. Academic Radiology, 5, 591-602.


Hillis, S.L., & Berbaum, K.S. (2004). Power estimation for the Dorfman-Berbaum-Metz method. Academic Radiology, 11, 1260-1273.


Hillis, S.L., Obuchowski, N.A., Schartz, K.M., & Berbaum, K.S. (2005). A comparison of the Dorfman-Berbaum-Metz and Obuchowski-Rockette methods for receiver operating characteristic (ROC) data. Statistics in Medicine, 24, 1579-1607.  DOI:10.1002/sim.2024.


Hillis, S.L. (2005). Monte Carlo validation of the Dorfman-Berbaum-Metz method using normalized pseudovalues and less data-based model simplification. Academic Radiology, 12, 1534-1541  DOI:10.1016/j.acra.2005.07.012.


Hillis, S.L. (2007). A comparison of denominator degrees of freedom for multiple observer ROC analysis. Statistics in Medicine, 26, 596-619. DOI: 10.1002/sim.2532.
Hillis, S.L., Berbaum, K.S., Metz, C.E. (2008).  Recent developments in the Dorfman-Berbaum-Metz procedure for multireader ROC study analysis. Academic Radiology, 15, 647-661. DOI:10.1016/j.acra.2007.12.015


Unregistered users may not download the DBM MRMC software.  Please register if you wish to download the software.  If you have already registered, please login to see the available downloads.

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