Among women with the condition, about 11.6 percent reported using them.

Times are reported in local time using a 24 hour clock.

In 1997, 1 percent of women reported using the pills.

Three quarters of these families reported using a major treatment plan.

More than 6% of high school seniors reported using it every day.

In that age group 58 percent reported using a condom.

Many parents who reported using the device had children 13 and younger, the age group considered most in need of protection.

More than 29% of Americans aged 12 or older reported using tobacco in the last month.

But among people 15 to 19 years old, about a quarter reported using a form of contraception.

Only within the last year have researchers reported using the original technique in humans.