I have a study with a lot of follow-up visit (1 to 30).
A lot of variables are in common in these follow-up, some follow-up have exactly the same variables between them (FU1=FU10=FU25; FU2=FU4…), some have more, some have fewer.
I think I have 3 options to do that:
1. Having Hide&Show rules depending on which CRF we are using => 1 FU = 1 CRF
2. Having different CRF with specifics sections => 1 FU = several CRF
3. Having different version of 1 CRF with only the variables needed in each version => 1 FU = 1 CRF
I want to do option 3, what do you think? Will it have an impact on the export?
Do you think of an option 4?
Thank you for your advice.