MISSING Subcommand (BOOTSTRAP command)

The MISSING subcommand is used to control whether user-missing values for categorical variables are treated as valid values. By default, user-missing values for categorical variables are treated as invalid. The setting used here should be the same as that used on the procedure following the BOOTSTRAP command.

• Cases with invalid values are deleted listwise.
• The MISSING subcommand defines categorical variables as variables with measurement level set at Ordinal or Nominal in the data dictionary. Use the VARIABLE LEVEL command to change a variable's measurement level.
• User-missing values for continuous variables are always treated as invalid.
• System-missing values for any variables are always treated as invalid.

USERMISSING=EXCLUDE. User-missing values for categorical variables are treated as invalid. This is the default.

USERMISSING=INCLUDE. User-missing values for categorical variables are treated as valid values.