Safety of (eastern) tree skiing?

[bizarrefaith]

Males, yes. Intermediate trails, yes.

But I'm fairly sure the age is lower, and the skiers are intermediates (though it wouldn't shock me if many get falsely reported as expert).

Eh, neither would surprise me. Experts on intermediate trails may tend to ski faster than on more demanding terrain, be less focused, and more likely to have to abruptly avoid other skiers stopped in bad spots or skiing erratically. Skier/rider deaths is also such a tiny number drawing any conclusions drawn from historic trends probably isn't going to be very predictive.