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

Source: Monitoring the Future

Ratios of Crack to Marijuana Use -- Past Year Use (1991 - 2005)
Year 12th Grade 10th Grade 8th Grade
1991 0.063 0.055 0.113
1992 0.068 0.059 0.125
1993 0.058 0.057 0.109
1994 0.062 0.056 0.100
1995 0.061 0.063 0.101
1996 0.059 0.063 0.098
1997 0.062 0.063 0.096
1998 0.067 0.080 0.124
1999 0.071 0.075 0.109
2000 0.060 0.068 0.115
2001 0.057 0.055 0.110
2002 0.064 0.076 0.110
2003 0.063 0.057 0.125
2004 0.067 0.062 0.110
2005 0.057 0.064 0.115
Averages: 0.063 0.063 0.110

Navigate to Other Available Data

Lifetime 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 Youth Drug Use Overview

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