Women vs. men

The rate of violent crime against men in the Bakken region surpassed the non-Bakken region, with the former jumping 31 percent from 2006 to 2012, or a rate of 90 per 10,000 males to 118, the study said. The latter dropped 10 percent from a rate of 116 per 10,000 males to 104 in that time frame.

The increase in the Bakken region for men was higher than that of female violent victimization, which climbed 18 percent from 2006 to 2012.

However, the rate at which women were victimized in both the non-Bakken and Bakken regions largely outpaced male victimization. The rate of female victims in the Bakken rose from 118 per 10,000 females in 2006 to 140 in 2012, closing the gap on the non-Bakken rate, the study said.

Overall, the rate of serious crime — homicide, sexual assault, aggravated assault and robbery — climbed 38 percent in the Bakken, while it fell 4 percent in the non-Bakken region.

Taken separately, the rate of sexual assault and rape crimes stayed mostly steady in the Bakken, with a decline of 3 percent. The non-Bakken region saw a drop of 5 percent.

“Sexual assault is one of the most underreported crimes,” Richardson said, noting the data includes only reported crimes.