However, if it only worked 50 percent of the time they would change (or remove) content.

He works on the cruise lines 90 percent of the year.

"But our study found the device works 100 percent of the time," he said.

Nicotine patches work only about 20 percent of the time.

"I assume that she's not working 100 percent of the time."

But a dummy pill worked 30 percent of the time.

"People wouldn't pay for a telephone if it only worked 90 percent of the time."

This may work about 25 percent of the time, some experts say.

From 1967 to 1997, the theory worked 87.5 percent of the time.

Over the years I've been able to use my bike to get to work about 30 to 40 percent of the time.