Re: Calculating BDI score with SPSS20

Posted by David Marso on Dec 15, 2011; 8:33pm
URL: http://spssx-discussion.165.s1.nabble.com/Calculating-BDI-score-with-SPSS20-tp5078520p5078609.html

"What is the correct terminology for the calculation I need to do..."
Most would call this a conditional transformation.
KEYWORDS: IF, DO IF (in the FM).
---
data list / Q1 TO Q18 1-18 Q19a 19 Q19b 20.
begin data
31321313321213231411
21123132113121231320
22121212312121222311
13212123322212231320
12332233123313223221
12332444241424443320
end data
value labels Q19b 0 "no" 1 "yes".
* Method 1 .
COMPUTE Total=SUM(Q1 TO Q18,Q19a*(Q19b EQ 0)).

* Method 2 .
COMPUTE TOT1TO18=SUM(Q1 TO Q18).
COMPUTE TOTAL19=TOT1TO18.
IF Q19b=0 Total19=SUM(TOT1TO18,Q19a).
LIST.


Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 Q19A Q19B    TOTAL TOT1TO18  TOTAL19

 3  1  3  2  1  3  1  3  3  2   1   2   1   3   2   3   1   4    1    1     39.00    39.00    39.00
 2  1  1  2  3  1  3  2  1  1   3   1   2   1   2   3   1   3    2    0     35.00    33.00    35.00
 2  2  1  2  1  2  1  2  3  1   2   1   2   1   2   2   2   3    1    1     32.00    32.00    32.00
 1  3  2  1  2  1  2  3  3  2   2   2   1   2   2   3   1   3    2    0     38.00    36.00    38.00
 1  2  3  3  2  2  3  3  1  2   3   3   1   3   2   2   3   2    2    1     41.00    41.00    41.00
 1  2  3  3  2  4  4  4  2  4   1   4   2   4   4   4   3   3    2    0     56.00    54.00    56.00


Number of cases read:  6    Number of cases listed:  6

benfranklin23 wrote

I am a novice SPSS user and have (I believe) a fairly straightforward question, but don't know the correct terminology, so have been unable to find an answer online. I apologize in advance if this question is simplistic!

I want to calculate scores for the Beck Depression Inventory (BDI) and already know how to create a variable for the total score (I have numbered responses of 0-3 for each question, and for most questions it is just a matter of adding up the responses) . However, question 19 has two parts. Part A is a normal 0-3 scale, but Part B has a yes or no response. If the response is "yes", part A should not be included in the total score, but if the response is "no" than Part A needs to be added.

What is the correct terminology for the calculation I need to do, and can anyone explain to me how to do it?

Thanks a lot!