Ratios of Crack Use to Marijuana Use by 12th Grade Students


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Source: Monitoring the Future

Ratios of Crack Use vs Marijuana Use Among 12th Grade Students (1985 - 2005)
Year Lifetime Past Year Past Month
1985 -- -- --
1986 -- 0.11 --
1987 0.11 0.11 0.062
1988 0.10 0.09 0.089
1989 0.11 0.10 0.084
1990 0.09 0.07 0.050
1991 0.08 0.06 0.051
1992 0.08 0.07 0.050
1993 0.07 0.06 0.045
1994 0.08 0.06 0.042
1995 0.07 0.06 0.047
1996 0.07 0.06 0.046
1997 0.08 0.06 0.038
1998 0.09 0.07 0.044
1999 0.09 0.07 0.048
2000 0.08 0.06 0.046
2001 0.08 0.06 0.049
2002 0.08 0.06 0.056
2003 0.08 0.06 0.042
2004 0.09 0.07 0.050
2005 0.08 0.06 0.051
Averages: 0.08 0.07 0.052

Navigate to Other Available Data

12th Grade Crack Use Overview Crack vs Alcohol Use Ratios Comparison Use Ratios vs Both Marijuana & Marijuana
8th Grade Use Ratios vs Marijuana 10th Grade Use Ratios vs Marijuana College Use Ratios vs Marijuana
Age 19 to 28 Use Ratios vs Marijuana Use Across 8th, 10th and 12th Grades Use Across 12th Grade, College Students, and Young Adults

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