You'd have to ask CASA, but don't expect an answer.
In the wake of the addition of the ethnicity question, I wrote to CASA and asked:
Given the legion of studies which have produced data showing that sexual minority groups are at greater risk of suicidality than heterosexuals, when will CASA add questions about an applicant’s sexual preferences and gender identity to the medical certificate application questionnaire?
The AvMed questionnaire is, after all, supposed to be about safety risk assessment, isn't it?
Unsurprisingly, silence continues to be the stern reply.
And for the record, my view is that those questions, and the ethnicity question, are offensive, unnecessary and probably unlawful if - as seems to be the inevitable consequence of the different answers to the ethnicity question - otherwise identical applicants are assessed as having different cardio-vascular disease risks and subjected to different testing requirements/certificate conditions/refusal to certify because of the applicants' different answers to the question.