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. Author manuscript; available in PMC: 2012 Jan 1.
Published in final edited form as: Addict Behav. 2010 Sep 25;36(1-2):95–102. doi: 10.1016/j.addbeh.2010.09.001

Table 1.

Characteristics of participants of the Wave 3 survey.

Male (N=2253, 50.7%a)
Female (N=2629, 49.3%a
Total (N=4882)
N (%)a N (%)a N (%)a
Ageb (Mean, SE) 21.9 (0.12) 21.7 (0.12) 21.8 (0.12)
Race/ethnicity
   White 1365 (67.9) 1579 (68.7) 2944 (68.3)
   Black 504 (15.5) 649 (16.1) 1151 (15.8)
   Hispanic 249 (11.6) 265 (10.8) 514 (11.2)
   Other 131 (5.1) 130 (4.4) 261 (4.7)
Participant's marital status
   Not married 1972 (87.3) 2107 (79.0) 4079 (83.2)
   Married 280(12.7) 522 (21.0) 802 (16.8)
Participant's employment status
   Unemployed 644 (28.2) 896 (33.0) 1540 (30.6)
   Employed 1609 (71.8) 1733 (67.0) 3342 (69.4)
Physical abusec 319 (15.2) 335 (13.4) 654 (14.3)
Sexual abusec 89 (4.4) 111 (4.3) 200 (4.3)
Neglectc 439 (21.3) 499 (20.2) 938 (20.7)
Wave 3 past year any illicit drug use* 887 (40.1) 740 (29.1) 1627 (34.6)
Wave 3 past year marijuana use* 848 (38.5) 708 (27.8) 1556 (33.2)
Wave 3 past year cocaine use* 190 (9.0) 109 (4.4) 299 (6.7)
Wave 3 past year crystal methamphetamines use* 76 (3.6) 44 (1.7) 120 (2.7)
Wave 3 past year used other illicit drugs (LSD, PCP, ecstasy, mushrooms, inhalants, “ice”, heroin)* 260 (12.4) 181 (7.0) 441 (9.7)
Wave 3 past year used any illegal injection drug 12 (0.4) 10 (0.5) 22 (0.5)
Wave 3 past 30-day any illicit drug use* 631 (29.0) 472 (18.9) 1103 (24.0)
Wave 3 past 30-day marijuana use* 608 (28.1) 454 (18.2) 1062 (23.2)
Wave 3 past 30-day cocaine use* 92 (4.3) 51 (2.0) 143 (3.2)
Wave 3 past 30-day crystal methamphetamines use* 43 (2.0) 23 (0.8) 66 (1.4)
Wave 3 past 30-day used other illicit drugs (LSD, PCP, ecstasy, mushrooms, inhalants, “ice”, heroin)* 121 (5.6) 86 (3.5) 207 (4.5)
Wave 3 past 30-day used any illegal injection drug* 9 (0.4) 3 (0.1) 12 (0.2)
Wave 3 past year drug-related problems* 334 (15.5) 170 (6.3) 504 (11.0)
Perceived peer drug use 715 (32.8) 809 (31.5) 1524 (32.2)
Wave 1 adolescent illicit drug use*
0 times 1590 (70.0) 1943 (73.2) 3533 (71.6)
1~10 times 368 (16.9) 4359 (16.8) 803 (16.9)
>10 times 271 (13.1) 241 (10.0) 512 (11.5)
a

Reflects the representative proportion in the target US population. Percentages may not total 100% because of rounding.

b

Mean and standard error (SE) were presented because age is continuous.

c

Occurred in isolation or with other types of maltreatment.

*

Significant differences in the prevalence of illicit drug use between boys and girls.