I believe your challenge here is related to the variable naming convention. The '-' is used when a numeric indicator is at the end of a variable name (for example x1,x2,x3,x4), but not when it is internale to the name (x1_dat, x2_dat, x3_dat). What you can do, assuming that the variables are in this order on the program data vector (PDV) is use a double dash '--'. In your case, _1_CIWA_Score --_4_CIWA_Score. This will include any variable in the DATA step created between the first introduction of _1_CIWA_Score and the first introduction of _4_CIWA_Score. If you view the DATA set and these variable appear together as a group with _1_CIWA_Score appearing first and _4_CIWA_Score appearing as the last, you will be fine. Hope it helps.
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