First, where are you getting those numbers? I'm not calling them into question, I'm interested to see the full dataset.

Second, the waiting list by itself isn't the best metric to use here. We might expect there to be more BIPOC people on the waiting list if White people are finding ways to skip the line (such as by securing private donations).

But to answer your question, I don't have a source. I was working off the assumption that every racial group needs organ transplants at equal rates, but you're right to point out that that isn't necessarily the case. Perhaps certain groups are predisposed to illnesses that require more transplants, or perhaps other groups receive better preventative healthcare and avoid getting to that point. These sorts of influences are deeply rooted in all levels of society and they can be hard to tease out.

Thank you for pointing that out. I'm upvoting your comment so people can choose whether to leave that point in or not. FWIW, I'm not strictly suggesting people use this, and I certainly don't expect anyone to use it verbatim. I just figured if I went to the trouble of typing this up, other people ought to have a chance to use it as their first draft.