MISSING Subcommand (NOMREG command)

By default, cases with missing values for any of the variables on the NOMREG variable list are excluded from the analysis. The MISSING subcommand allows you to include cases with user-missing values.

• Note that missing values are deleted at the subpopulation level.

EXCLUDE. Excludes both user-missing and system-missing values. This is the default.

INCLUDE. User-missing values are treated as valid. System-missing values cannot be included in the analysis.