Over all, the drug agency said, the antibiotic proved effective for 52 percent of patients who were not too sick to be fully evaluated.

The new rate is 6 percent, from 5.25 percent, effective today.

Most people try to say they're like 99.9 percent effective, and that's not true.

The top corporate tax rate has been cut to 18 percent from 20 percent, effective January 2005.

The panel said emergency contraception was effective 75 percent of the time.

In these women, the two pills were effective 95 percent of the time.

The current interest rate on bonds held at least five years is 7.17 percent, effective from November through April.

The company announced a 2-for-1 stock split, and said it would raise its modest quarterly dividend by 33 percent, effective July 31.

They're estimating that our point defense is going to be at least twenty-five percent less effective than we'd projected.

On Friday, the Bank of America announced that it would cut its prime to 10.5 percent, effective today.