PASSIVE Keyword (CATPCA command)

If correlations are requested on the PRINT subcommand, and passive treatment of missing values is specified for a variable, the missing values must be imputed. For the correlations of the quantified variables, you can specify the imputation with one of the following keywords:

MODEIMPU. Impute missing values on a variable with the mode of the quantified variable. MODEIMPU is the default.

EXTRACAT. Impute missing values on a variable with the quantification of an extra category. This treatment implies that objects with a missing value are considered to belong to the same (extra) category.

RANDIMPU. Impute each missing value on a variable with the quantified value of a different random category number based on the marginal frequencies of the categories of the variable.

Note that with passive treatment of missing values, imputation applies only to correlations and is done afterward. Thus, the imputation has no effect on the quantification or the solution.