Perhaps I can answer that because I was involved in a large study with Statistics Canada.
Unfortunately, the data for race and ethnicity is not collected and not correlated with the method of detection of breast cancer, so we had to do a very circuitous registry adjustment and correlate it with the census data to be able to provide that race and ethnicity data. This is really a significant gap, and we need to be able to collect these kinds of data to be able to show the impact of screening in these women of different races and ethnicities.
Our data does show that there is very significant harm being done to the women of races and ethnicities other than white, and that includes indigenous women and women of all ethnicities in Canada, with a higher rate of advanced-stage breast cancer.
This is a call for increasing the data collection in different provinces and territories to be able to capture this more readily and to demonstrate the impact of screening and diagnosis.