occur among

Over all, most of the bad behavior occurred among students in grades 7 through 12.

Of these, about 125 to 175 cases occur among college students, including 15 to 20 deaths.

About 11 percent of the murders occurred among family members.

An increase of more than 75 percent occurred among women delivering before age 35.

A total of 370,715 abortions had occurred among 280,965 women.

By 2010, the total is expected to rise to more than 39 million, with the largest increase occurring among those over 85.

Most instances of cancer occur among children between 3 to 3.5 years old.

"It usually occurs among 50 percent of those who have been exposed."

And that is where the real changes have occurred among this nation's regions.

The smallest rich point can occur among different groups of the same community.