. "Appendix B: Data Sources." Informing America's Policy on Illegal Drugs: What We Don't Know Keeps Hurting Us. Washington, DC: The National Academies Press, 2001.
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Informing America’s Policy on Illegal Drugs: What We Don’t Know Keeps Hurting Us
TABLE B.2 1999 Lifetime and Past-Month Prevalence of Marijuana and Cocaine Use for 10th and 12th Graders
Lifetime Use
Past Month Use
Year in School
Drug
MTF
YRBSS
MTF
YRBSS
10th grade
Marijuana
40.9
49.1
19.4
27.8
Cocaine
7.7
9.9
1.8
3.7
12th grade
Marijuana
49.7
58.4
23.1
31.5
Cocaine
9.8
13.7
2.6
4.8
NOTE: MTF=Monitoring the Future. YRBSS=Youth Risk Behavior Surveillance System.
SOURCES: Monitoring the Future: National Results on Adolescent Drug Use, Overview of Key Findings. National Institute on Drug Abuse: Washington DC. Available on-line October 9, 2000 at http://monitoringthefuture.org/new.html; and Youth Risk Behavior Surveillance—1999. Centers for Disease Control: Washington DC. Available on-line October 9, 2000 at http://www.cdc.gov/mmwr/preview/mmwrhtml/ss4905a1.htm.
