You can go here: https://health-infobase.canada.ca/covid-19/vaccination-cover...
From that, you can figure out that there are more people unvaccinated under 12 years old, than in the entire rest of the population, by a large margins - out of 7.6 million people without full vaccination, 2.9 million are between 5 and 11 years old, and 1.9 million people are under 5 years old.
So out of the 7.6 million people who aren't fully vaccinated, 4.8 million are under 12 years old!
And from 2.8 million remaining, 430k of those are under 18, and 1.0 million are under 30.
From this, we can figure out that the pre-vaccine hospitalization risk for the unvaccinated population is much, much lower than for the normal population.
This is without taking into account health status, of course!
Quebec publishes age-ajusted hospitalization rates per vaccine status, the latest number is a 7.7x odds ratio, which would be even worse for the ICU : https://mobile.twitter.com/sante_qc/status/14791225681667481...