Sex Education Linked to Delay in First Sex

An interesting article from the Guttmacher Institute website. Though this site is not Christian, and the article has a definite bias that I disagree with, the findings from their research proves very provocative.

My question for you parents is this: how long could sex be delayed if we shoulder the responsibility of sex education for our kids and humbly, truthfully, and thoroughly cover the issue and answer any/all of their questions?