- Inhaling cocaine was the predominant route of cocaine administration for much of the 20th century. In the early 1980s, a potent smokeable form of cocaine known as "crack" was developed.
- Trends in admissions to substance abuse treatment for cocaine and cocaine route of administration were examined with annual data from SAMHSA's Treatment Episode Data Set (TEDS).
- In 1995, 63% of primary smoked cocaine (crack) were younger than age 35. By 2005, only 32% of primary crack admissions were in this age group.
- The proportion of both inhaled and smoked cocaine (crack) admissions who were employed full time decreased between 1995 and 2005.