HPCOUNTREG Procedure
Functional Summary
Table 1 summarizes the statements and options used with the HPCOUNTREG procedure.
Table 1: Functional Summary
| Description | Statement | Option |
|---|---|---|
| Data Set Options | ||
| Specifies the input data set | HPCOUNTREG | DATA= |
| Specifies the identification variable for panel data analysis | HPCOUNTREG | GROUPID= |
| Writes parameter estimates to an output data set | HPCOUNTREG | OUTEST= |
| Writes estimates to an output data set | OUTPUT | OUT= |
| Specifies BY-group processing | BY | |
| Specifies an optional frequency variable | FREQ | |
| Specifies an optional weight variable | WEIGHT | |
| Printing Control Options | ||
| Prints the correlation matrix of the estimates | HPCOUNTREG | CORRB |
| Prints the covariance matrix of the estimates | HPCOUNTREG | COVB |
| Suppresses the normal printed output | HPCOUNTREG | NOPRINT |
| Requests all printing options | HPCOUNTREG | PRINTALL |
| Options to Control the Optimization Process | ||
| Specifies maximum number of iterations allowed | HPCOUNTREG | MAXITER= |
| Selects the iterative minimization method to use | HPCOUNTREG | METHOD= |
| Specifies maximum number of iterations allowed | HPCOUNTREG | MAXITER= |
| Specifies maximum number of function calls | HPCOUNTREG | MAXFUNC= |
| Specifies the upper limit of CPU time in seconds | HPCOUNTREG | MAXTIME= |
| Specifies absolute function convergence criterion | HPCOUNTREG | ABSCONV= |
| Specifies absolute function convergence criterion | HPCOUNTREG | ABSFCONV= |
| Specifies absolute gradient convergence criterion | HPCOUNTREG | ABSGCONV= |
| Specifies relative function convergence criterion | HPCOUNTREG | FCONV= |
| Specifies relative gradient convergence criterion | HPCOUNTREG | GCONV= |
| Specifies absolute parameter convergence criterion | HPCOUNTREG | ABSXCONV= |
| Specifies matrix singularity criterion | HPCOUNTREG | SINGULAR= |
| Sets boundary restrictions on parameters | BOUNDS | |
| Sets initial values for parameters | INIT | |
| Sets linear restrictions on parameters | RESTRICT | |
| Model Estimation Options | ||
| Specifies the dispersion variables | DISPMODEL | |
| Specifies the type of model | HPCOUNTREG | DIST= |
| Specifies the type of covariance matrix | HPCOUNTREG | COVEST= |
| Specifies the type of error components model for panel data | MODEL | ERRORCOMP= |
| Suppresses the intercept parameter | MODEL | NOINT |
| Specifies the offset variable | MODEL | OFFSET= |
| Specifies the parameterization for the Conway-Maxwell-Poisson (CMP) model | MODEL | PARAMETER= |
| Specifies the zero-inflated offset variable | ZEROMODEL | OFFSET= |
| Specifies the zero-inflated link function | ZEROMODEL | LINK= |
| Output Control Options | ||
| Includes covariances in the OUTEST= data set | HPCOUNTREG | COVOUT |
| Includes correlations in the OUTEST= data set | HPCOUNTREG | CORROUT |
| Outputs SAS variables to the output data set | OUTPUT | COPYVAR= |
| Outputs the estimates of dispersion for the CMP model | OUTPUT | DISPERSION |
Outputs the estimates of GDelta  for the CMP model | OUTPUT | GDELTA= |
Outputs the estimates of  for the CMP model | OUTPUT | LAMBDA= |
Outputs the estimates of  for the CMP model | OUTPUT | NU= |
Outputs the estimates of  for the CMP model | OUTPUT | MU= |
| Outputs the estimates of mode for the CMP model | OUTPUT | MODE= |
| Outputs the probability that the response variable will take the current value | OUTPUT | PROB= |
| Outputs probabilities for particular response values | OUTPUT | PROBCOUNT( ) |
| Outputs expected value of response variable | OUTPUT | PRED= |
| Outputs the estimates of variance for the CMP model | OUTPUT | VARIANCE= |
Outputs estimates of XBeta  | OUTPUT | XBETA= |
Outputs estimates of ZGamma  | OUTPUT | ZGAMMA= |
| Outputs probability of a zero value as a result of the zero-generating process | OUTPUT | PROBZERO= |
| Performance Options | ||
| Requests a table that shows a timing breakdown | PERFORMANCE | DETAILS |
| Specifies the number of threads to use | PERFORMANCE | NTHREADS= |
Last updated: June 19, 2025