For comparison, women in the general population have an 84% chance of living to age 70.

For a comparison, the city lost more than 600,000 jobs from 1969 to 1975.

For comparison, patients in the third group weren't asked to listen to music during the study.

For comparison, people in the other group didn't play any video games.

They can be set to 0 at any point for comparisons.

See the table in the following section for a comparison.

Records on more than 700 other patients without heart problems but with high blood pressure were used for comparison.

Then again, I have nothing in my past experience to use as a basis for comparison.

Both systems are growing, though, and now the field is finally level enough for a fair comparison.

On the other hand I could see the benefit for a comparison.