Ratios of Lifetime Crack Use vs Marijuana Use Among Those Ages 19 to 28, College Students, and 12th Grade Students


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Source: Monitoring the Future

Ratios of Crack to Marijuana Use -- Lifetime Use (1986 - 2004)
Year Ages 19 to 28 College Students 12th Grade Students
1986 -- -- --
1987 0.095 0.059 0.108
1988 0.108 0.063 0.102
1989 0.097 0.047 0.108
1990 0.085 0.029 0.086
1991 0.082 0.032 0.084
1992 0.090 0.039 0.080
1993 0.077 0.031 0.074
1994 0.082 0.024 0.079
1995 0.071 0.043 0.072
1996 0.073 0.027 0.073
1997 0.067 0.030 0.079
1998 0.070 0.044 0.090
1999 0.079 0.047 0.093
2000 0.083 0.049 0.080
2001 0.084 0.039 0.076
2002 0.076 0.038 0.079
2003 0.082 0.061 0.078
2004 0.073 0.041 0.085
Averages: 0.082 0.041 0.085

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Past Year vs Marijuana Past Month vs Marijuana New Use vs Marijuana
Use Ratios Among Age 19 to 28 Use Ratios Among College Students Use Ratios Among 12th Grade Students
Other Drugs vs Marijuana Use Ratios Crack vs Alcohol Use Ratios Big Picture Drug Use Overview

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