specifies an input data set that contains the poststratum totals or specifies the population poststratum totals as positive
values. The SURVEYMEANS procedure uses this information to compute weight adjustment for poststratification.

You can provide poststratification totals by specifying PSTOTAL=SAS-data-set, which names a SAS data set that contains the poststratification variables and the poststratum totals. This data set is called
the *poststratum total data set*.

A poststratum total data set must contain all the poststratification variables that are listed in the POSTSTRATA statement
and all the variables listed in the BY statement. If there are formats associated with the POSTSTRATA variables and the BY
variables, then the formats in the poststratum total data set for these variables must be consistent with those in the DATA= data set in the PROC SURVEYMEANS statement.

A poststratum total data set must have a variable named `_PSTOTAL_`

that contains the poststratum totals. The value of `_PSTOTAL_`

must be positive.

When poststratum levels are easy to identify, their corresponding poststratum totals can be specified as a list of positive
numbers.

ORDER=FORMATTED is used to order the levels of poststratum levels.

You can separate values in the PSTOTAL= option with blanks or commas. The number of values must equal the number of poststrata in the data. List the values in the order of the corresponding poststratum level. The sum of the values should equal the total sampling weights.

specifies an input data set that contains the population poststratum proportions or specifies the population poststratum proportions
as positive values. The SURVEYMEANS procedure uses this information to compute weight adjustment for poststratification.

You can provide poststratification proportions by specifying POSTPCT=SAS-data-set, which names a SAS data set that contains the poststratification variables and the poststratum poststratification. This data
set is called the *poststratum proportion data set*.

A poststratum proportion data set must contain all the poststratification variables that are listed in the POSTSTRATA statement
and all the variables listed in the BY statement. If there are formats associated with the POSTSTRATA variables and the BY
variables, then the formats in the poststratum proportion data set for these variables must be consistent with those in the
DATA= data set in the PROC SURVEYMEANS statement.

A poststratum proportion data set must have a variable named `_PSPCT_`

that contains the poststratum proportions. The value of `_PSPCT_`

must be positive.

You can provide poststratum proportions either as positive decimal numbers between 0 and 1 for all poststrata or as positive
percentages that must be less than 100 for all poststrata. If any value of the proportions is greater than 1, the procedure
treats all proportions as percentages instead of decimal numbers.

When poststratum levels are easy to identify, their corresponding poststratum proportions can be specified as a list of positive
numbers.

ORDER=FORMATTED is used to order the levels of poststratum levels.

You can separate values in the POSTPCT= option with blanks or commas. The number of values must equal the number of poststrata in the data. List the values in the order of the corresponding poststratum level.

If you provide the proportions as decimal numbers, then the sum of these values over all poststrata must be 1.

If you provide the proportions as percentages, then the sum of these percentages over all poststrata must be 100.