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2004 National Survey on Drug Use & Health:  Detailed Tables

50428

Table 4.1A Numbers (in Thousands) of Persons Who Initiated Marijuana Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 777 309 468 18.5 14.8 23.5
1966 832 289 543 19.1 13.0 24.9
1967 1,397 530 868 18.8 24.9 37.3
1968 1,980 842 1,139 18.6 38.6 49.2
1969 2,462 1,002 1,461 18.7 46.3 66.1
1970 2,692 1,238 1,454 18.6 57.6 64.3
1971 2,954 1,308 1,646 18.5 59.8 76.3
1972 3,164 1,665 1,500 18.2 77.2 66.1
1973 3,490 1,741 1,749 18.6 80.4 79.3
1974 3,222 1,912 1,311 18.2 90.6 59.5
1975 3,227 1,889 1,339 18.1 91.0 63.2
1976 3,226 1,896 1,331 18.3 94.9 65.1
1977 3,345 1,967 1,378 18.6 100.3 66.4
1978 3,289 1,991 1,298 18.3 104.8 67.1
1979 2,996 1,760 1,236 18.8 95.0 60.6
1980 2,573 1,581 992 18.4 86.0 51.2
1981 2,438 1,440 998 18.3 80.7 56.3
1982 2,323 1,393 930 18.9 77.9 47.1
1983 2,351 1,443 908 18.2 80.6 52.7
1984 2,113 1,324 789 18.1 76.0 44.3
1985 2,165 1,357 808 18.0 77.9 48.0
1986 2,062 1,258 805 17.7 74.2 49.5
1987 1,823 1,113 710 18.0 64.5 44.6
1988 1,702 1,075 627 17.8 64.2 40.1
1989 1,647 971 675 18.1 57.1 40.6
1990 1,482 843 639 18.4 48.1 36.7
1991 1,694 1,031 662 18.0 58.0 39.0
1992 1,920 1,167 753 17.2 64.0 47.2
1993 2,154 1,349 805 17.2 72.9 47.2
1994 2,420 1,568 852 17.0 84.6 52.0
1995 2,635 1,674 961 17.0 88.8 57.8
1996 2,483 1,579 903 17.2 82.9 54.4
1997 2,603 1,716 887 17.1 89.3 54.2
1998 2,498 1,684 814 16.8 85.2 51.3
1999 2,640 1,691 950 17.4 84.8 57.4
2000 2,746 1,834 912 16.9 91.3 56.0
2001 2,793 1,833 960 17.4 90.9 57.1
20022 2,686 1,861 825 17.1 91.1 49.1
20033 2,463 1,655 809 17.0 79.7 46.8
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential bias from reporting and other sources.
1 The numerator of each rate is the number of persons in the age group who initiated use of the drug in the specified year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 and 2004 data only.
3 Estimated using 2004 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002, 2003, and 2004.

50428

Table 4.2A Numbers (in Thousands) of Persons Who Initiated Cocaine Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 80 * 61 20.7 * 2.2
1966 41 * 36 22.5 * *
1967 87 * 80 23.6 * 2.9
1968 162 49 113 20.2 2.2 4.2
1969 187 46 141 21.0 1.8 4.5
1970 266 76 189 19.3 3.3 7.1
1971 413 93 320 20.6 3.9 10.5
1972 520 136 384 19.3 5.6 13.4
1973 586 162 424 20.3 6.8 13.6
1974 792 191 601 21.4 7.9 16.8
1975 827 169 658 21.1 7.0 18.9
1976 937 194 743 21.1 8.2 23.2
1977 1,165 247 917 21.5 10.6 24.9
1978 1,255 226 1,029 21.4 9.9 29.9
1979 1,315 240 1,075 20.8 10.8 33.6
1980 1,457 293 1,163 22.0 13.4 31.5
1981 1,546 308 1,238 21.3 14.3 36.6
1982 1,518 271 1,248 22.6 12.9 33.5
1983 1,557 254 1,303 22.2 12.3 37.5
1984 1,419 272 1,147 22.0 13.5 33.2
1985 1,441 281 1,159 22.3 14.2 32.9
1986 1,315 256 1,059 22.8 13.2 30.4
1987 1,162 239 923 22.3 12.4 27.7
1988 1,084 175 909 22.7 9.2 26.9
1989 968 154 814 23.0 8.0 23.6
1990 843 162 682 23.2 8.6 19.0
1991 687 121 566 22.9 6.2 15.8
1992 747 160 587 24.5 8.1 14.3
1993 634 143 491 23.1 7.1 13.4
1994 655 160 494 22.5 7.5 14.1
1995 744 214 530 21.3 10.1 16.7
1996 825 244 581 21.6 11.2 17.9
1997 861 243 618 20.8 10.9 20.7
1998 868 264 605 20.9 11.5 19.5
1999 917 270 648 21.1 11.5 20.2
2000 1,002 289 714 20.8 12.0 23.0
2001 1,140 335 805 20.9 13.7 24.9
20022 1,073 333 740 20.3 13.5 22.8
20033 1,094 384 710 19.8 15.3 23.0
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential bias from reporting and other sources.
1 The numerator of each rate is the number of persons in the age group who initiated use of the drug in the specified year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 and 2004 data only.
3 Estimated using 2004 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002, 2003, and 2004.

50428

Table 4.3A Numbers (in Thousands) of Persons Who Initiated Crack Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 15 * * * * *
1970 * * * * * *
1971 * * * * * *
1972 20 * * * * *
1973 36 * * * * *
1974 16 * * * * *
1975 34 * 26 20.7 * 0.6
1976 26 * 26 * * *
1977 54 * 41 19.3 * 1.2
1978 86 * 60 20.7 * 1.4
1979 70 * 62 22.1 * 1.6
1980 115 27 88 22.8 1.2 1.8
1981 125 16 109 22.8 0.7 2.6
1982 157 17 140 25.8 0.8 2.1
1983 200 15 185 24.4 0.7 3.6
1984 278 30 248 24.1 1.5 3.9
1985 350 41 309 24.7 2.0 6.0
1986 284 37 247 25.2 1.9 4.6
1987 302 39 263 23.7 2.0 5.4
1988 390 45 344 25.8 2.3 5.4
1989 388 13 375 25.1 0.7 7.3
1990 384 38 346 26.6 2.0 4.9
1991 370 35 334 26.0 1.7 5.8
1992 373 35 338 27.5 1.8 4.8
1993 369 39 330 28.1 1.9 4.8
1994 349 45 304 27.2 2.1 3.8
1995 393 48 345 27.4 2.2 5.9
1996 382 57 325 26.5 2.5 5.2
1997 357 55 301 26.2 2.5 5.4
1998 360 82 278 23.9 3.5 6.0
1999 399 61 338 27.1 2.5 5.6
2000 407 79 328 27.1 3.2 5.4
2001 365 78 287 25.3 3.1 5.3
20022 340 82 258 23.5 3.3 5.2
20033 303 79 225 23.1 3.1 4.5
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential bias from reporting and other sources.
1 The numerator of each rate is the number of persons in the age group who initiated use of the drug in the specified year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 and 2004 data only.
3 Estimated using 2004 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002, 2003, and 2004.

50428

Table 4.4A Numbers (in Thousands) of Persons Who Initiated Heroin Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 * * * * * *
1966 * * * * * *
1967 33 * 17 * * 0.8
1968 78 51 27 16.8 2.3 1.1
1969 35 * 30 19.3 * 1.1
1970 88 31 57 22.2 1.3 1.5
1971 117 26 90 19.4 1.1 3.2
1972 150 18 132 19.7 0.8 4.6
1973 166 36 129 20.1 1.4 4.0
1974 170 36 134 20.3 1.5 4.1
1975 79 21 58 20.1 0.9 1.7
1976 80 * 68 20.9 * 1.9
1977 98 9 89 22.2 0.4 2.4
1978 81 18 63 20.0 0.8 2.0
1979 70 17 53 20.6 0.8 1.4
1980 67 * 53 20.7 * 1.5
1981 90 13 77 20.6 0.6 2.2
1982 55 * 51 22.7 * 1.3
1983 66 * 60 23.3 * 1.3
1984 89 17 72 23.0 0.8 1.5
1985 37 * 35 24.1 * 0.7
1986 67 * 49 22.8 * 1.0
1987 82 8 73 25.2 0.4 1.6
1988 94 * 83 22.9 * 1.9
1989 82 * 76 24.6 * 1.5
1990 50 * 46 26.4 * 0.6
1991 63 * 61 25.3 * 1.2
1992 109 10 99 26.9 0.5 1.1
1993 59 8 51 25.2 0.4 0.8
1994 79 14 65 25.5 0.7 0.9
1995 111 30 81 23.0 1.4 1.3
1996 140 24 117 23.7 1.1 2.8
1997 114 35 79 22.3 1.5 1.9
1998 140 29 112 22.7 1.2 2.7
1999 121 29 92 22.8 1.2 2.2
2000 114 36 77 20.8 1.4 2.1
2001 154 38 116 22.8 1.6 2.9
20022 147 33 115 22.3 1.2 2.5
20033 96 39 57 20.2 1.5 1.6
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential bias from reporting and other sources.
1 The numerator of each rate is the number of persons in the age group who initiated use of the drug in the specified year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 and 2004 data only.
3 Estimated using 2004 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002, 2003, and 2004.

50428

Table 4.5A Numbers (in Thousands) of Persons Who Initiated Hallucinogen Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 104 41 63 17.9 2.0 3.2
1966 146 59 87 19.8 2.7 3.5
1967 245 92 153 18.7 4.1 6.0
1968 393 188 204 18.7 8.3 7.3
1969 846 322 524 18.8 14.1 20.5
1970 945 408 537 18.3 18.0 21.6
1971 958 488 470 18.0 21.4 17.8
1972 1,041 521 521 17.7 22.6 19.8
1973 956 466 491 18.1 19.9 18.2
1974 970 481 489 18.7 20.4 16.6
1975 972 462 510 18.2 19.8 19.1
1976 953 441 512 19.1 19.1 17.8
1977 907 398 510 18.8 17.4 18.2
1978 943 452 491 18.2 19.9 17.8
1979 953 467 486 18.4 21.4 15.9
1980 1,015 439 576 19.1 20.6 18.6
1981 982 385 597 19.3 18.6 19.9
1982 985 383 602 20.0 18.5 18.9
1983 743 286 456 19.1 14.0 15.9
1984 705 263 442 19.3 13.0 15.1
1985 744 323 421 18.6 16.0 14.9
1986 837 328 509 19.4 16.9 17.2
1987 751 319 432 19.2 16.6 15.3
1988 757 296 461 19.1 15.8 16.2
1989 742 279 462 19.1 14.8 16.3
1990 654 283 371 19.5 15.1 12.1
1991 751 329 422 18.8 17.4 15.6
1992 726 332 394 18.8 16.9 14.1
1993 807 380 427 19.1 19.1 14.6
1994 943 470 473 18.1 23.3 18.4
1995 962 473 489 18.2 22.7 19.0
1996 1,050 510 540 18.8 23.9 21.1
1997 1,077 501 576 18.8 22.7 22.5
1998 1,104 514 590 18.8 22.5 21.9
1999 1,383 617 766 18.6 26.7 30.3
2000 1,522 664 858 19.1 28.2 32.1
2001 1,511 681 830 19.2 28.5 29.3
20022 1,141 530 610 18.6 21.5 22.0
20033 1,065 526 539 18.9 21.1 18.0
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential bias from reporting and other sources.
1 The numerator of each rate is the number of persons in the age group who initiated use of the drug in the specified year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 and 2004 data only.
3 Estimated using 2004 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002, 2003, and 2004.

50428

Table 4.6A Numbers (in Thousands) of Persons Who Initiated LSD Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 58 * 32 22.7 * 0.9
1966 110 42 69 20.6 2.0 2.6
1967 142 52 91 19.3 2.2 3.4
1968 366 209 157 18.1 9.6 5.3
1969 674 244 431 18.9 10.6 16.8
1970 764 342 422 18.1 15.0 17.1
1971 769 347 422 18.5 15.0 15.1
1972 897 460 437 17.7 20.0 16.3
1973 816 403 413 18.3 17.0 14.6
1974 785 409 376 18.1 17.4 13.4
1975 664 312 352 18.5 13.3 12.2
1976 643 284 360 18.3 12.2 12.9
1977 683 311 372 18.8 13.4 12.9
1978 634 261 373 18.4 11.5 13.0
1979 787 388 399 18.3 17.5 13.0
1980 772 359 414 19.0 16.7 12.6
1981 773 319 455 19.3 15.3 14.2
1982 681 288 393 19.1 13.8 12.4
1983 565 222 343 19.0 10.8 11.8
1984 549 196 353 19.5 9.7 11.2
1985 570 266 303 19.2 13.1 9.1
1986 596 247 350 19.2 12.6 11.5
1987 567 287 280 18.6 14.9 9.4
1988 597 254 343 18.7 13.5 11.9
1989 604 231 373 19.5 12.3 11.6
1990 537 251 286 18.9 13.4 9.8
1991 597 302 296 18.3 16.0 10.9
1992 620 284 336 18.5 14.7 12.4
1993 579 282 297 18.5 14.3 10.6
1994 714 400 314 17.8 19.7 11.8
1995 780 404 376 17.8 19.4 14.8
1996 805 413 392 18.2 19.3 15.0
1997 777 392 385 18.3 17.7 14.9
1998 716 401 314 17.9 17.6 12.1
1999 762 397 365 17.9 17.1 13.8
2000 788 392 396 18.1 16.6 14.7
2001 614 314 300 18.1 13.0 10.9
20022 303 170 133 17.3 6.8 5.0
20033 320 147 173 18.5 5.7 5.4
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential bias from reporting and other sources.
1 The numerator of each rate is the number of persons in the age group who initiated use of the drug in the specified year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 and 2004 data only.
3 Estimated using 2004 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002, 2003, and 2004.

50428

Table 4.7A Numbers (in Thousands) of Persons Who Initiated PCP Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 72 68 * 15.3 3.1 *
1969 58 43 * 17.2 1.8 *
1970 171 77 94 18.1 3.4 3.5
1971 264 121 143 19.2 5.2 4.6
1972 343 152 191 18.5 6.5 6.3
1973 352 132 219 19.0 5.6 7.7
1974 447 211 236 18.2 8.7 7.9
1975 409 203 206 18.4 8.5 6.4
1976 489 229 260 19.3 9.7 7.6
1977 433 177 257 19.0 7.6 7.9
1978 407 164 243 20.1 7.2 6.2
1979 350 144 206 18.9 6.5 6.1
1980 278 102 176 20.2 4.6 4.9
1981 247 87 159 19.6 4.1 4.5
1982 234 60 173 21.2 2.8 4.4
1983 157 53 104 19.3 2.6 3.2
1984 121 31 90 19.5 1.5 2.8
1985 116 49 68 18.9 2.4 2.1
1986 124 29 94 20.0 1.4 2.7
1987 101 34 67 20.6 1.7 1.7
1988 94 33 61 21.2 1.7 1.3
1989 117 44 73 20.4 2.3 1.8
1990 71 35 36 21.7 1.8 0.6
1991 81 38 43 20.0 1.9 1.1
1992 85 25 59 19.8 1.3 1.8
1993 89 45 44 19.2 2.2 1.3
1994 94 59 35 17.0 2.9 1.3
1995 145 68 76 18.4 3.2 2.7
1996 131 69 61 17.9 3.1 1.9
1997 124 67 57 17.6 2.8 2.0
1998 105 62 43 17.4 2.6 1.4
1999 149 79 69 17.7 3.3 2.5
2000 166 102 65 17.6 4.1 2.0
2001 177 97 79 17.7 3.9 2.4
20022 141 87 54 17.0 3.4 1.8
20033 136 78 58 17.8 3.0 1.4
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential bias from reporting and other sources.
1 The numerator of each rate is the number of persons in the age group who initiated use of the drug in the specified year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 and 2004 data only.
3 Estimated using 2004 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002, 2003, and 2004.

50428

Table 4.8A Numbers (in Thousands) of Persons Who Initiated Ecstasy Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 * * * * * *
1970 * * * * * *
1971 * * * * * *
1972 21 * * * * *
1973 15 * * * * *
1974 * * * * * *
1975 * * * * * *
1976 38 * 30 21.9 * *
1977 * * * * * *
1978 16 * 8 * * *
1979 38 * 35 23.5 * 0.8
1980 33 * 29 24.1 * 0.6
1981 47 * 47 24.2 * 0.9
1982 29 12 17 19.9 0.6 0.4
1983 82 * 73 26.1 * 1.2
1984 93 * 91 25.1 * 1.6
1985 160 20 140 21.7 1.0 3.4
1986 179 23 155 22.9 1.2 3.8
1987 178 16 162 23.4 0.8 4.3
1988 191 37 154 22.9 1.9 3.9
1989 211 33 178 22.0 1.7 5.0
1990 197 17 180 24.8 0.9 3.5
1991 166 16 149 23.0 0.8 3.7
1992 208 24 184 24.0 1.2 4.0
1993 219 39 179 22.6 1.9 4.9
1994 268 57 211 22.2 2.8 5.8
1995 339 68 271 21.4 3.2 8.2
1996 412 100 313 22.7 4.4 9.0
1997 563 123 440 21.9 5.4 12.6
1998 839 166 674 21.4 7.1 20.3
1999 1,315 310 1,005 21.3 13.1 29.9
2000 1,633 406 1,227 21.3 17.0 36.9
2001 1,661 491 1,170 21.6 20.3 32.6
20022 1,152 342 810 21.5 13.8 21.8
20033 803 268 535 21.0 10.6 14.5
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential bias from reporting and other sources.
1 The numerator of each rate is the number of persons in the age group who initiated use of the drug in the specified year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 and 2004 data only.
3 Estimated using 2004 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002, 2003, and 2004.

50428

Table 4.9A Numbers (in Thousands) of Persons Who Initiated Inhalant Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 92 91 * 13.9 4.3 *
1966 172 139 33 15.4 5.8 1.4
1967 194 132 61 16.3 5.4 2.3
1968 209 146 63 17.0 6.2 1.7
1969 296 213 83 16.1 9.2 3.3
1970 335 204 131 16.4 7.7 5.2
1971 325 207 117 17.3 8.4 3.2
1972 326 220 106 16.3 8.6 3.6
1973 406 226 180 18.1 9.5 5.4
1974 465 248 217 18.3 9.4 6.0
1975 519 316 203 17.3 12.3 6.7
1976 599 302 298 18.2 12.7 9.1
1977 742 345 396 18.4 14.1 11.5
1978 636 350 286 17.9 14.6 8.6
1979 806 404 401 18.6 17.7 10.9
1980 678 379 299 18.5 17.5 8.3
1981 597 329 268 18.1 15.1 7.2
1982 562 282 280 18.8 12.4 6.9
1983 579 325 254 18.1 14.3 6.6
1984 547 307 240 18.1 14.7 6.9
1985 573 276 297 19.0 13.6 8.6
1986 573 338 235 18.9 16.6 6.0
1987 560 315 244 18.1 15.1 7.7
1988 551 323 228 17.5 15.9 7.4
1989 464 239 225 18.0 11.4 7.8
1990 523 287 236 17.9 14.4 8.3
1991 472 268 204 18.5 13.3 5.6
1992 559 359 200 16.9 17.4 7.2
1993 597 338 259 18.1 16.1 7.8
1994 551 373 178 16.7 16.6 6.3
1995 689 404 285 17.6 17.7 10.3
1996 670 408 262 17.0 16.5 9.3
1997 704 455 248 16.4 17.5 9.7
1998 821 507 314 17.2 18.4 11.1
1999 904 572 332 16.6 20.2 11.5
2000 1,028 708 320 16.4 24.8 10.6
2001 1,085 759 325 16.0 27.9 11.5
20022 1,057 812 245 15.4 29.6 8.4
20033 1,077 829 248 15.4 31.9 8.4
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential bias from reporting and other sources.
1 The numerator of each rate is the number of persons in the age group who initiated use of the drug in the specified year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 and 2004 data only.
3 Estimated using 2004 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002, 2003, and 2004.

50428

Table 4.10A Numbers (in Thousands) of Persons Who Initiated Nonmedical Use of Pain Relievers in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 95 33 62 24.9 * *
1966 52 28 24 19.8 1.0 *
1967 128 52 76 19.8 2.3 2.7
1968 224 70 154 19.9 2.9 6.1
1969 296 150 145 19.8 6.4 4.2
1970 367 172 195 19.3 6.6 5.9
1971 404 160 244 19.6 6.7 8.1
1972 358 133 224 19.6 5.4 7.0
1973 431 177 254 19.8 7.3 7.4
1974 456 201 256 19.4 7.7 6.9
1975 495 177 318 20.2 7.1 8.8
1976 443 166 277 20.9 7.0 6.6
1977 491 156 335 20.2 6.5 9.8
1978 457 173 284 19.9 7.2 7.8
1979 526 223 303 20.1 10.0 7.7
1980 509 177 332 21.6 7.8 6.7
1981 488 127 361 21.1 5.8 9.1
1982 460 146 314 21.9 6.5 6.8
1983 594 143 451 22.2 6.6 10.3
1984 506 113 393 24.0 4.9 8.6
1985 540 156 383 21.9 6.9 9.1
1986 562 94 467 24.3 4.5 10.0
1987 625 138 487 24.6 6.2 9.2
1988 538 89 448 24.7 4.3 9.4
1989 612 134 478 24.2 6.6 9.9
1990 557 115 442 23.3 5.5 10.2
1991 604 146 457 23.8 6.9 9.9
1992 777 184 593 24.5 8.3 11.7
1993 694 173 521 23.3 7.6 12.5
1994 932 260 672 24.1 11.2 13.8
1995 917 298 618 23.0 12.5 14.2
1996 1,100 355 744 22.0 14.8 20.4
1997 1,316 430 886 22.1 17.3 24.0
1998 1,548 558 990 22.7 21.9 23.5
1999 1,810 677 1,133 22.4 26.4 27.8
2000 2,268 860 1,408 22.0 34.7 36.3
2001 2,400 1,025 1,375 21.4 41.9 35.0
20022 2,699 1,154 1,545 22.0 47.8 37.5
20033 2,581 1,229 1,352 21.3 51.1 31.6
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential bias from reporting and other sources.
1 The numerator of each rate is the number of persons in the age group who initiated use of the drug in the specified year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 and 2004 data only.
3 Estimated using 2004 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002, 2003, and 2004.

50428

Table 4.11A Numbers (in Thousands) of Persons Who Initiated Nonmedical Use of OxyContin® in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2004 NSDUH
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 * * * * * *
1970 * * * * * *
1971 * * * * * *
1972 * * * * * *
1973 * * * * * *
1974 * * * * * *
1975 * * * * * *
1976 * * * * * *
1977 * * * * * *
1978 * * * * * *
1979 * * * * * *
1980 * * * * * *
1981 * * * * * *
1982 * * * * * *
1983 * * * * * *
1984 * * * * * *
1985 * * * * * *
1986 * * * * * *
1987 * * * * * *
1988 * * * * * *
1989 * * * * * *
1990 * * * * * *
1991 * * * * * *
1992 18 * * * * *
1993 42 * * * * *
1994 * * * * * *
1995 21 9 * 28.3 0.4 *
1996 46 17 * 18.7 0.8 *
1997 92 25 68 20.5 1.1 2.1
1998 124 39 85 21.9 1.7 2.1
1999 186 48 138 23.8 1.9 2.9
2000 304 55 248 25.9 2.3 4.9
2001 502 104 398 24.7 4.3 8.4
2002 595 146 450 24.0 5.8 9.1
2003 721 198 522 26.1 7.7 9.1
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential bias from reporting and other sources.
NOTE: OxyContin® was not approved for use by the U.S. Food and Drug Administration until December 12, 1995. Inferences made from data of respondents indicating use in or before 1995 should be made with caution.
1 The numerator of each rate is the number of persons in the age group who initiated use of the drug in the specified year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2004.

50428

Table 4.12A Numbers (in Thousands) of Persons Who Initiated Nonmedical Use of Tranquilizers in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 59 28 31 17.7 1.3 *
1966 62 * * 18.5 * *
1967 110 * 87 21.2 * 2.8
1968 155 26 129 21.1 1.2 4.4
1969 235 115 120 19.1 5.0 3.6
1970 218 116 102 18.3 4.9 3.4
1971 255 120 135 20.6 5.2 4.1
1972 374 150 224 19.2 6.1 6.9
1973 460 157 302 20.3 6.5 8.4
1974 462