Checking input data

A simple Syntax like this can make your *.sav file coherent, logic and might even help you when you need to locate any cases that does not follow your research pattern.

Here is a fairly simple check:

[Syntax]
DATA LIST FREE
/age gender pregnant.
BEGIN DATA
25 0 0
12 1 0
80 1 1
47 0 0
34 0 1
9 1 1
19 0 0
27 0 1
END DATA.

VALUE LABELS
/gender 0 'male' 1 'female'
/pregnant 0 'No' 1 'Yes'.

COMPUTE valueCheck = 0.
DO IF pregnant = 1.
DO IF gender = 0.
Compute valuecheck = 1.
ELSE IF gender = 1.
DO IF age > 55.
Compute valuecheck = 2.
ELSE IF age <>
Compute valuecheck = 3.
END IF.
END IF.
END IF.

VALUE LABELS valuecheck
0 'NO problems detected'
1 'Male and pregnant'
2 ' age > 55 and pregnant'
3 ' age <>

FREQ variables = valueCheck.
[/Syntax]

Life becomes even more easier when you use this in a script that runs immediately, when you open *.sav file.