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Figure 2.2 is titled "Past Month Use of Selected Illicit Drugs among Persons Aged 12 or Older: 2002 through 2004." It is a bar graph, where the types of illicit drugs are shown on the horizontal axis and the percentage using in the past month is shown on the vertical axis. There are six types of drugs listed: Illicit Drugs, Marijuana, Psychotherapeutics, Cocaine, Hallucinogens, and Inhalants. For each drug type, there are bars representing 2002, 2003, and 2004. Tests of statistical significance at the .05 level were performed between 2003 and 2004 estimates and between 2002 and 2004 estimates; significant results are indicated where appropriate.

The prevalence of past month use of illicit drugs was 8.3 percent in 2002, 8.2 percent in 2003, and 7.9 percent in 2004.
The prevalence of past month use of marijuana was 6.2 percent in both 2002 and 2003 and 6.1 percent in 2004.
The prevalence of past month use of psychotherapeutics was 2.6 percent in 2002, 2.7 percent in 2003, and 2.5 percent in 2004.
The prevalence of past month use of cocaine was 0.9 percent in 2002, 1.0 percent in 2003, and 0.8 percent in 2004.
The prevalence of past month use of hallucinogens was 0.5 percent in 2002, and 0.4 percent in both 2003 and 2004. The difference between the 2002 estimate and 2004 estimate was significant.
The prevalence of past month use of inhalants was 0.3 percent in 2002, 0.2 percent in 2003, and 0.3 percent in 2004.

Back to Figure 2.2

This page was last updated on May 20, 2008.