1.   Blair and his colleagues followed the participants for an average of eight and a half years, looking for common factors among those who survived and those who died.

2.   Bradley outspent Gore substantially in Iowa, and has a smaller edge here, but money is not the factor among Democrats as it is in the other race.

3.   A desire to assert control is a common factor among victims of eating disorders.

4.   But he hastens to add that attractiveness is just one factor among many.

5.   But remember that options are only one factor among many to consider in taking a job.

6.   But, Pollack said, he did not expect size to be the governing factor among his buyers.

7.   Carbon dioxide is the largest single factor among greenhouse gases that trap solar energy.

8.   In a case-control study, researchers compare factors found among people with a certain disease to factors among a comparable group of people without that disease.

9.   In the end, polls will be only one factor among many to be weighed.

10.   It is truly because they are worried George W. Bush has touched an important factor among conservatives.