The study involved 4 teachers each teaching a difference class.

The 18-month study involved 94 girls from 12 to 14.

There's a lot more study involved than there used to be.

James says that the study involved older people than in most studies.

The study involved 260 people, average age 71, with no memory problems in 1989-1990.

Their study involved 1,186 women, 41 to 92 years old, who took part in one full day of testing each.

One important concern was that the two studies involved a small number of patients.

The study involved about 1,000 people studied over six years.

The study involved nearly 500 patients at 33 medical centers.

Perhaps the most careful study of the issue involved 12,000 young people.