That's the proportional equivalent of 9,600 murders in five years, or 1,920 per year.
1,920 is 11% of America's 2003 murder stat of 16,500.
About 90 people are murdered on the average US weekend - not even 160, let alone a proportional 9,600.
The study and resulting stats are erroneous. They asked a Scotsman how many people "wore kilt" over the course of a typical weekend, and he replied, "Damn near everybody, laddy!"
I didn't say we had 160 murders every weekend. But we could if we really tried hard!