Testing clinical effectiveness in people requires experiments that can single out the true effects of specific actions.

More important, setting the critical value at seven would make it difficult to detect a true effect.

The background music is a laid back piano score while the sound effects all ring true.

It's likely the study underestimates the true effect of the vaccine.

A different mechanism exists on Pluto, which is not a true anti-greenhouse effect.

Those laws were not retroactive, so their true effects have not yet been seen.

In such a trial, a doctor would have limited information about what the true effect of the drug was.

The true effects will be seen in years to come.

Its true effect could be read in Gleep's reaction.

No one knows the true effect this is having on our health.