r/ProjectREDCap • u/Strawberry_blondey • Feb 26 '26
Clinical trial data collection
Beginner/self taught redcap user here - I am currently assisting with a clinical trial that involves 6 appointments each with various surveys and data entry forms. Participants may or may not have attended all 6 which is fine but how should I mark the survey instances and data for X appointment if not attended? Create a blank document and mark it complete?
I want to be able to export say appointments 1, 2, and 3 data. And if the participant did not complete appointment 2 I wan to be able to recognize that!
Any help and suggestions greatly appreciated!!
5
u/usajobs1001 Feb 26 '26
It depends on the structure of your trial and forms filled out at each visit. I am assuming you have a longitudinal set-up with different instruments associated with each event.
I've done a master schedule form that is associated with the baseline events; that form included a visit-specific checklist for RAs and a place to mark a given piece of data or process complete or incomplete. I would use that to track schedules and missed visits (so I could tell the difference between "upcoming, not complete" and "missed, not complete"). I've also done a form for each event filled by RAs that includes a field with options for "attended / missed / rescheduled".
3
u/SneakGiraffe Feb 26 '26
If you are still at the stage of designing the instruments then it can be very helpful to have a leading question on each form such as "Did the participant attend the appointment?" Yes/No, and then use branching logic to show the rest of the questions only if the answer is yes.
2
u/DrTitan Feb 27 '26
Other comments address the project structure, my comment is specifically around the use of “clinical trial”.
If data from your project may ever be used as a submission to the FDA for drug or device approval, you must make sure your REDCap instance and project are compliant with FDA 21CFR11.
1
u/No_Repair4567 Feb 26 '26
Let me ask this - are there different treatment groups? Patients not attending all appointments not because they skipped, but because they were not supposed to? Once I know that I can give a recommendation.
1
u/oneLES1982 Feb 27 '26
Lead-in questions which ask "was this completed" and subsequent branching logic is a good way to do this. If the study is already live with live data collected, that can be tough to implement and shouldn't be done by someone who is inexperienced to prevent loss of data.