MISSING Subcommand (NPTESTS command)

The MISSING subcommand controls the treatment of records with missing values.

  [/MISSING [SCOPE={ANALYSIS**}] [USERMISSING={EXCLUDE**}]]
                   {LISTWISE  }               {INCLUDE  }

SCOPE

The SCOPE keyword specifies how to determine the case basis for tests.

ANALYSIS

Exclude records with missing values on a test-by-test basis. Records with missing values for a field that is used for a specific test are omitted from that test. On subcommands that specify several tests, each test is evaluated separately. This is the default setting.

Descriptive statistics for test fields and frequencies for grouping variables are handled on a fieldwise basis. Record bases for these can be different and can differ from those that are used in computing hypothesis tests and confidence intervals.

LISTWISE

Exclude records with missing values listwise. Records with missing values for any field that is named on any subcommand are excluded from all analyses.

USERMISSING

The USERMISSING keyword is used to control whether user-missing values for categorical fields are treated as valid values. By default, user-missing values for categorical fields are treated as invalid.

• User-missing values for continuous fields are always treated as invalid.
• System-missing values for any fields are always treated as invalid.

EXCLUDE

User-missing values for categorical fields are treated as invalid. This is the default.

INCLUDE

User-missing values for categorical fields are treated as valid values.