Two questions:
1) I'm unsure, based on the presentation, whether the stats on prostitution in the US only pertain to actual rings of kidnappers and purchasing agents, or if they also include the "independent" pimps who set up with the "free" labor market of child and adolescent runaways, and women seduced into prostitution. Which is it?
2) Wouldn't it be more realistic to compare knife violence in Europe to gun violence in America? To control for the weapon of choice in the regions compared appears to make more sense to me.
Regards--
Mary Anne