Whats your question ? im happy to help but im not sure what youre asking :)
The answer to this question is: 20%
These demographic of students are the mixture of the students who want to focus themselves on the study, have some sort of medical illness that prevent them to do so, or the students that simply have a general personality that do not find being around alcohol and social situation very pleasant.
Ikr people been putting links and I don’t like it either