The overwhelming fact is that of the 1.6 million young people between the ages of 12 and 18 with serious alcohol and drug problems, fewer than one in 10 receive treatment. Of the estimated 175,000 who do, only about 25 percent stay in treatment for three months, as recommended by the National Institute on Drug Abuse; less than 50 percent stay for even six weeks, according to the Office of Applied Statistics in 2005.