I designed a codebook and form and tried entering a few data records and discovered that I need to change something in the study design. How can I do this after the data file already has data?
ANSWER – Once data has been entered into a data file, you can still change any text in the codebook or data manager form. You can also change the field width of any variable. If you change the field width of a variable, the associated data file will also be adjusted when you save the codebook.. However, once a data file exists, you should not 1) add a new variable, 2) delete a variable, or 3) change the order of variables, because the data file would no longer match the revised codebook. When you load a codebook that has an associated data file, StatPac will give you a warning that lets you turn off the buttons for these operations. (You can turn off the warning by selecting Format, Codebook Safety, No). If you don’t need the data file (e.g., it’s just dummy test data), simply delete the data file and then make the desired changes to the codebook You will also have to modify the data entry form because it does not automatically reflect the changes in the codebook. The easiest way to ch
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