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Figure 9.3 is titled "Past Year Cocaine Use among Persons Aged 12 or Older, by Age: 1972 through 2004." It is a line graph, where the horizontal axis represents the study year, and the vertical axis represents the percentage using cocaine in the past year. There is a note below the graph that reads, "Data points represents surveys conducted since 1972. The 1972 through 1998 data are from NHSDA (PAPI), the 1999 through 2001 data are from NHSDA (CAI), and the 2002 through 2004 data are from NSDUH (CAI). The three series of NSDUH/NHSDA data use different methodologies and are not comparable with the other series." The graph has a line for persons aged 12 to 17, a line for persons aged 18 to 25, and a line for persons aged 26 to 34. All three lines are broken into three sections based on the methodology of the survey.

Using PAPI questionnaires, NHSDA showed that past month cocaine use among youths aged 12 to 17 was 1.3 percent in 1972. This increased to 3.6 percent in 1979, and then remained steady through 1985, before decreasing to 0.7 percent in 1993. The rate of use in 1998 was 1.7 percent. Using CAI, NHSDA showed that past month cocaine use among youths was 1.6 percent in 1999. This remained steady though 2001. Using CAI, NSDUH showed that past month cocaine use among youths was 2.1 percent in 2002. This decreased slightly to 1.6 percent in 2004.

Using PAPI questionnaires, NHSDA showed that past month cocaine use among young adults aged 18 to 25 was 7.0 percent in 1974. This sharply increased to 17.0 percent in 1979, and then decreased to 3.6 percent in 1994. The rate of use in 1998 was 4.7 percent. Using CAI, NHSDA showed that past month cocaine use among young adults was 5.2 percent in 1999. This dropped to 4.4 percent in 2001 and increased to 5.7 percent in 2001. Using CAI, NSDUH showed that past month cocaine use among persons aged 18 to 25 was 6.7 percent in 2002. This remained steady through 2004, where the estimate was 6.6 percent.

Using PAPI questionnaires, NHSDA showed that past month cocaine use among adults aged 26 to 34 was 5.7 percent in 1979. This increased to 10.5 percent in 1985, and then decreased to 2.7 percent in 1998. Using CAI, NHSDA showed that past month cocaine use among persons aged 26 to 24 was 2.4 percent in 1999. This remained steady though 2001. Using CAI, NSDUH showed that past month cocaine use among youths was 3.6 percent in 2002. This remained fairly steady though 2004, where the rate was 4.0 percent.

Back to Figure 9.3

This page was last updated on May 20, 2008.