How to build an eligibility criteria from the weight assigned to certain conditions (composite index)

OK, here is the revised one. This should work as you outline:

In the survey tab of your xlsform:

In the choices tab of your xlsform:

Image 2

Data entry screen as seen in Enketo: when conditions are not met

Data entry screen as seen in Enketo: when conditions are not met

Data entry screen as seen in Enketo: when conditions are not met

Data entry screen as seen in Enketo: when conditions are met

Reference xlsform:

Eligibility Criteria.xlsx (13.6 KB)