DBM MRMC is an extension of LABMRMC from Charles Metz and MRMC from Kevin Berbaum and Donald Dorfman. This beta edition of the program provides the PROPROC, CBM, and RSCORE curve-fitting algorithms as well as the option of using a nonparametric trapezoidal/Wilxocon approach. The program will read either MRMC- or LABMMRMC-formatted data sets. In addition, the user has the option of performing an area under the ROC curve analysis, a sensitivity at a given specificity analysis, and a specificity at a given sensitivity analysis (not all combinations of curve-fitting algorithm and type of analysis are available in the beta edition). Also, a new ANOVA routine from Steve Hillis is used that provides random-reader random-case, fixed-reader random-case, and random-case fixed-reader analyses based on normalized
Contaminated Binormal Model (CBM)
CBM is a proper ROC model. It is available as part of the DBM MRMC download. It is also available separately for users wishing to use it with SAS or other third-party software.
RSCORE is a conventional ROC model. It is available as part of the DBM MRMC download. It is also available separately for users wishing to use it with SAS or other third-party software.
BIGAMMA is not available for download at this time. Users who desire a proper ROC model should use PROPROC or CBM.
RSCORE-J is a pooled data version of RSCORE II that computes estimates and standard errors for parameters of signal detection theory using the jackknife method for rating data.
SAS programs to perform sample size estimation and to call the curve-fitting DLLs are available.