Sexual problems occur in 43 percent of American women.

Sexual problems occur in 31 percent of American men.

No, but strikes occur in only 2 percent of all contract negotiations.

ApoE4 is not rare - it occurs in about 25 percent of the population.

But the most serious side effect was severe bleeding, which occurred in 1.4 percent.

Sexual abuse occurred in 2 percent of reported cases.

Three or more errors occurred in 18 percent of the records.

"It has been reported to occur in 60 to 75 percent of all pregnant women."

Dementia is rare and occurs in only five percent of patients.