Benchmark Dose Model Executables

This page lists the latest versions of individual model and help files used by BMDS.  Users can use this page to determine whether the BMDS model results used in an assessment came from the latest version of the subject model or a previous version.  This can be done by comparing the model version number and date that appears at the top of the text output page to the version number and date listed below.

Advanced users can use this page to download individual models (less than 1MB per model) without having to download the complete BMDS installation package (about 9MB).  The BMDS help manual provides instructions for running BMDS models in DOS, without the BMDS user interface.  Since the new versions of the models may or may not be compatible with versions of the user interface distributed with older BMDS install packages, it is recommended that users intending to use the models through the Windows user interface should follow this link to download the latest version of the complete Benchmark Dose Software (BMDS) package.

Finally, if you are a programmer, and would like to take a look at the guts of any or all of the EPA models, you can follow this link to download the source code for BMDS models.

Model Executable	Version (Date)	Model(s) Included
Gamma.exe	2.13 (05/16/2008)	Gamma-hit
Logist.exe	2.12 (05/16/2008)	Logistic and Log-Logistic
Multistage.exe	3.0 (05/16/2008)	Multistage
Probit.exe	3.1 (05/16/2008)	Probit and Log-Probit
Weibull.exe	2.12 (05/16/2008)	Weibull & Quantal Quadratic (Weibull; power=2)
Cancer.exe	1.7 (05/16/2008)	Multistage-cancer

Model Executable	Version (Date)	Model(s) Included
Hill.exe	2.14 (06/26/2008)	Hill
Poly.exe	2.13 (04/08/2008)	Polynomial and Linear
Power.exe	2.15 (04/07/2008)	Power
Exponential.exe	Beta version 1.1 (08/15/2007)	Suite of five (5) exponential models

Model Executable	Version (Date)	Model(s) Included
Nctr.exe	2.8 (04/10/2008)	NCTR (modified Weibull)
Nlogist.exe	2.14 (04/07/2008)	Nested Logistic
Raivr.exe	2.7 (04/10/2008)	Rai and Van Ryzin (modified Weibull)

Model Executable	Version (Date)	Model(s) Included
DichoHill.exe	1.0 (09/24/2006)	Dichotomous Hill Model
Cancer_BG_dose.exe	1.5 (12/01/2006)	Cancer Model with Background Dose
Gamma_BGdose.exe	1.2 (12/06/2006)	Gamma-hit Model with Background Dose
Logist_BG_Response.exe	2.9 (12/01/2006)	Logistic Model with Background Dose
Log_Probit_BG_Dose.exe	1.1 (12/03/2006)	Log Probit Model with Background Dose
Multistage_BG_Dose.exe	2.8 (12/01/2006)	Multistage Model with Background Dose
Probit_BG_Response.exe	2.7 (12/03/2006)	Probit Model with Background Dose
Weibull_BG_dose.exe	1.1 (12/06/2006)	Weibull Model with Background Dose