I can't speak to those prevalent statistics about abuse against older women because we really don't have them in a way that's comparable.
However, I agree with your concern about Canada and the need to continue to look at health issues and social issues with a gendered lens rather than just look at generic people. And it's not just a gendered lens: we also need to look at other dimensions of marginalization in our society. I can't speak to the numbers because they're really not available in a way that's comparable.