|The SURVEYMEANS Procedure
The STRATA statement names variables that form the
strata in a stratified sample design. The
combinations of categories of STRATA variables define
the strata in the sample.
- STRATASTRATUM variables < / option
If your sample design has stratification at multiple
stages, you should identify only the first-stage
strata in the STRATA statement.
See the section "Specification of Population Totals and Sampling Rates"
for more information.
The STRATA variables are one or more variables
in the DATA= input data
variables can be either character or numeric. The
formatted values of the STRATA variables determine
the levels. Thus, you can use formats to group values
See the discussion of the FORMAT
procedure in the SAS Procedures Guide.
You can specify the following option in the STRATA
statement after a slash (/).
displays a "Stratum Information" table, which
includes values of the STRATA variables and sampling
rates for each stratum. This table also provides the
number of observations and number of clusters for
each stratum and analysis variable.
the section "Displayed Output" for more details.
Copyright © 1999 by SAS Institute Inc., Cary, NC, USA. All rights reserved.