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. Author manuscript; available in PMC: 2010 Jun 10.
Published in final edited form as: Am Econ Rev. 2009 Mar 1;99(1):324–349. doi: 10.1257/aer.99.1.324

Figure 7. Positive Drug Test among Arrestees in San Diego, Los Angeles, and San Jose Who Report Ever Having Used Methamphetamine.

Figure 7

Notes: See notes for Figure 6. The cannabis results are from a test with a 50-nanogram threshold. This test was not performed from January to September 1994, so the values for that period have been imputed based on the result of a test with a 100-nanogram threshold.