The SURVEYREG Procedure

Due to the complex nature of survey data analysis, the SURVEYREG procedure requires more memory than an analysis of the same regression model by the GLM procedure. For details about the amount of memory related to the modeling, see the section Computational Resources in Chapter 45: The GLM Procedure.

The memory needed by the SURVEYREG procedure to handle the survey design is described as follows.

Let

The memory needed (in bytes) is

For a cluster sample, the additional memory needed (in bytes) is

The SURVEYREG procedure also uses other small amounts of additional memory. However, when you have a large number of clusters or strata, or a large number of parameters in your model, the memory described previously dominates the total memory required by the procedure.