Ratios of Past Month Crack Use vs Marijuana Use Among 8th, 10th and 12th Grade Students

Source: Monitoring the Future

Ratios of Crack to Marijuana Use -- Past Month Use (1991 - 2005)
Year 12th Grade 10th Grade 8th Grade
1991 0.051 0.034 0.094
1992 0.050 0.049 0.135
1993 0.045 0.046 0.078
1994 0.042 0.038 0.090
1995 0.047 0.052 0.077
1996 0.046 0.039 0.071
1997 0.038 0.044 0.069
1998 0.044 0.059 0.093
1999 0.048 0.041 0.082
2000 0.046 0.046 0.088
2001 0.049 0.035 0.087
2002 0.056 0.056 0.096
2003 0.042 0.041 0.093
2004 0.050 0.050 0.094
2005 0.051 0.046 0.091
Averages: 0.047 0.045 0.089

Navigate to Other Available Data

Lifetime vs Marijuana Past Year 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 Youth Drug Use Overview

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