Figure 2.8 is titled "Past Month Marijuana Use among Youths Aged 12 to 17, by Geographic Region: 2002 through 2004." It is a bar graph, where geographic regions are shown on the horizontal axis and the percentage using marijuana in the past month is shown on the vertical axis. The four geographic regions are Northeast, Midwest, South, and West. For each region, 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 percentage of youths in the Northeast using marijuana in the past month was 9.5 percent in 2002, 8.7 percent in 2003, and 8.6 percent in 2004.
The percentage of youths in the Midwest using marijuana in the past month was 8.1 percent in 2002, 8.0 percent in 2003, and 7.3 percent in 2004.
The percentage of youths in the South using marijuana in the past month was 7.7 percent in 2002, 6.8 percent in 2003, and 6.0 percent in 2004. The difference between the 2002 estimate and 2004 estimate was significant.
The percentage of youths in the West using marijuana in the past month was 8.0 percent in 2002, 8.7 percent in 2003, and 9.3 percent in 2004.

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This page was last updated on May 20, 2008.

SAMHSA, an agency in the Department of Health and Human Services, is the Federal Government's lead agency for improving the quality and availability of substance abuse prevention, addiction treatment, and mental health services in the United States.