PALS, again, does ask people to self-identify. It runs through the census. When you fill out the census, if you indicate that you have any sort of limitation that interferes with your activity or participation in your community or in employment, once you check that you get followed up with this other survey called the participation and activity limitation survey, which actually is in the field right now, I believe. So it's tied to the census, but it is totally self-identified.
Individuals self-identify in addition whether or not it's a mobility limitation or a learning difficulty.