CREATE MULTIPLE DICHOTOMY FROM CONDITIONS command

See Crunch Automation basics for more information.

The CREATE MULTIPLE DICHOTOMY FROM CONDITIONS command allows you to create a multiple response variable indicating the logical condition and optionally indicate the base for the evaluation, either by indicating the VALID rows or MISSING rows as a logical expression.

It is possible to use a global VALID/MISSING expression for all conditions or enter them individually, but both cannot be used simultaneously.

Each response statement must contain a LABEL and an optional ALIAS:

CREATE MULTIPLE DICHOTOMY FROM CONDITIONS
    MAPPING
        SELECT condition [(MISSING|VALID) condition] LABEL "label" [ALIAS alias],
        ....
        SELECT condition [MISSING|VALID) condition] LABEL "label" [ALIAS alias]
    END
    [MISSING|VALID) condition]
AS alias
[TITLE "string"]
[DESCRIPTION "string"]
[NOTES "string"];

Example

CREATE MULTIPLE DICHOTOMY FROM CONDITIONS
    MAPPING
        SELECT A=1 VALID is_valid(A) LABEL "First" ALIAS s1,
        SELECT B=1 OR C = 1 MISSING B != 1 LABEL "Second",                
        SELECT D != 1 AND (C != 1) LABEL "Third" ALIAS s2
    END
AS my_mr_cond;
CREATE MULTIPLE DICHOTOMY FROM CONDITIONS
    MAPPING
        SELECT A=1 LABEL "First" ALIAS s1,
        SELECT B=1 OR C = 1 LABEL "Second",                
        SELECT D != 1 AND (C != 1) LABEL "Third" ALIAS s2
    END
    MISSING is_missing(asked) OR asked = 1
AS my_mr_cond;

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