Let's follow the incentive: who benefits from making us believe that a simple Google Forms survey explains why 75% of people check their documents in advance and 25% at the last minute?
The fact that 78 people aged 18 to 50 filled out a questionnaire about their planning habits does not explain the underlying motive behind their behavior regarding identity documents.
Here, in Portugal, caution is not just a matter of planning, but of administrative delays that require anticipating the renewal of a cartão de cidadão to avoid any problems.