But he points out that those early surveys didn't include black men.

The survey did not include work for the business client.

The survey did not include participation from any population of students.

The survey, conducted in May, included 530 people age 23 to 35, all with at least $50,000 available for investment.

The survey did not include use of lawyers by business clients.

As in past years, the international survey includes a program devoted to a single country.

The survey also included questions meant to measure the quality of students' social relations.

The 1993 survey included questions about the television habits and educational development of 10,888 young children.

The survey, which was carried out in June 2004, included 781 women ages 40 to 60.

So a survey might include responses from more women and fewer men than it should.