we have some problems with spss and need some urgent help (its for our thesis).
we have a datafile in spss ordered as a case control set 1: 10. (1197 cases)
we also have another dataset with 5388 cases, not ordered as a case control set.
Now, we need some variables from the big dataset (5833 cases) to put in the dataset with 1197 cases. (automatically adjusted to the case control)
We tried already with 'merge files' and you have to add a unique identifier variable. How do you do that ? I know you have to have a variable in each dataset with the same name, but we have different variables in each dataset, some are the same but not unique !!
Can someone explain this easily please ? (we are not experts in spss...)