"The risk-benefit ratio is not worth it to go in there," the sergeant told his men.

Frail elderly people may choose to decline some kinds of medical care, because the risk-benefit ratio is different.

They concluded the risk-benefit ratio remains favorable for many people.

Study Includes 217 Children "You have a new risk-benefit ratio now," he said.

F.D.A. officials say that differentiating among patient groups to improve the risk-benefit ratio of a new drug is already common practice.

Whatever modality is chosen to treat a disease, the risk-benefit ratio and potential quality of life need to be assessed.

That's a risk-benefit ratio any expectant mother can understand.

Without knowledge of the risk-benefit ratio, the prudent course is to abstain.

Phlebotomy probably tops out on the risk-benefit ratio.

No one knew the risk-benefit ratio of using the anthrax vaccine.