Display of elements respecting a specific criterion

Hi all, Hi @Kal_Lam
I am new on the forum and I thank you because it helps me a lot for my learning of kobocollect.

How to display items that meet a specific criteria.
I explain myself with an attached Excel file
I want to do an anonymous survey of 100 men on their marital status (single, married, divorced, widowed). Each respondent has a unique ID
I would like to know how to avoid the same identifier being entered twice and how to display the IDs of married respondents, single respondents, divorced respondents, widowed respondents. I think I have to use index-repeat but I don’t know how to use it
Thank you please help me
Marital status survey v1.xlsx (11.2 KB)

Welcome to the community, @matsniper! Could you explain this a bit more so that we could help you solve it?

Or, are you trying to check if Respondent A has already been interviewed and should not be repeated in subsequent interviews?

Hi @kal_lam,
Yes I am trying to check if Respondent A has already been interviewed, he should not be repeated in subsequent interviews

@matsniper, it seems like we already had this issue discussed here: