Data from a 2004 survey conducted as part of the Agency for Healthcare Research and Quality (AHRQ) annual Medical Expenditure Panel Survey reveal that many people don't consider life-threatening illness a strong enough reason to quit smoking. Forty percent of adults with emphysema and 23.4% of people with asthma or history of stroke continue smoking despite its risks, along with 17% of those with diabetes.

From the Centers for Disease Control and Prevention

Figure. Rate of Hospitalization for Depression Among Persons Five to 19 Years of Age in the United States, 1990-1992 and 2002-2004 (per 100,000 population)

According to data derived from the annual National Hospital Discharge Survey, from 1990-1992 to 2002-2004 the rate of hospitalization for females five to 19 years of age increased 81%. The rate for young females was almost two times that for young males from 2002 to 2004.