Table 2.
Characteristics of lifetime methamphetamine users and both ADHD stimulant and methamphetamine users compared to nonmedical ADHD stimulant users in a sample of the US population aged 18 and older (N= 116,459): data from 2009–2011 National Survey on Drug Use and Health.
| Characteristics | Nonmedical ADHD stimulant users N (Wgt%) |
Methamphetamine users N (Wgt%) |
Odds ratio | Both ADHD stimulant and methamphetamine users N (Wgt%) |
Odds ratio |
|---|---|---|---|---|---|
| Total | 7267(3.1) | 4640(4.5) | 2282(1.5) | ||
| Gender | |||||
| Male | 3926(54.3) | 2466(60.3) | 1.00 | 1286(64.9) | 1.00 |
| Female | 3341(45.7) | 2174(39.7) | 0.78(0.70,0.87)‡ | 996(35.1) | 0.63(0.53,0.75)‡ |
| Age | |||||
| 18–25 | 5921(50.7) | 1358(7.6) | 1.00 | 1245(19.6) | 1.00 |
| 26–34 | 856(25.7) | 1001(19.6) | 5.11 (4.41,5.91)‡ | 439(25.4) | 2.56(2.18,3.01)‡ |
| 35–49 | 303(10.3) | 1653(41.3) | 26.88(22.86,31.61)‡ | 380(25.0) | 6.29(5.17,7.65)‡ |
| >50 | 187(13.3) | 628(31.6) | 15.89(12.28,20.57)‡ | 218(30.0) | 5.83(4.33,7.84)‡ |
| Race | |||||
| White | 6030(85.8) | 3325(79.1) | 1.00 | 1875(86.1) | 1.00 |
| Black | 239(3.6) | 125(3.2) | 0.98(0.70,1.36) | 51(2.6) | 0.72(0.45,1.14) |
| Hispanic | 505(6.6) | 675(11.8) | 1.96(1.63,2.35)‡ | 172(7.4) | 1.12(0.78,1.60) |
| Others | 493(4.1) | 515(5.9) | 1.57(1.17,2.10)† | 184(3.9) | 0.96(0.70,1.32) |
| Marital status | |||||
| Married | 878(24.6) | 1876(50.0) | 1.00 | 518(33.5) | 1.00 |
| No longer married | 282(9.1) | 963(25.1) | 1.36(1.05,1.76)* | 356(26.1) | 2.11(1.47,3.03)‡ |
| Never married | 6107(66.4) | 1801(24.8) | 0.18(0.16,0.22)‡ | 1408(40.4) | 0.42(0.35,0.56)‡ |
| Employment | |||||
| Full/Partial | 5150(72.9) | 3131(71.1) | 1.00 | 1499(67.3) | 1.00 |
| Unemployed | 753(7.8) | 531(9.0) | 1.17(0.98,1.40) | 326(11.7) | 1.62(1.23,2.14)* |
| Not labor force | 1364(19.3) | 978(20.0) | 1.06(0.88,1.29) | 457(21.0) | 1.18(0.95,1.46) |
| Education | |||||
| < high school | 764(7.7) | 1029(16.4) | 1.00 | 483(16.5) | 1.00 |
| High school | 1856(21.3) | 1636(32.7) | 0.72(0.61,0.84)‡ | 769(31.3) | 0.68(0.54,0.87)* |
| ≥ College | 4647(71.1) | 1973(50.9) | 0.33(0.28,0.40)‡ | 1030(52.2) | 0.34(0.26,0.44)‡ |
| Income | |||||
| < $20,000 | 2303(23.6) | 1183(19.8) | 1.00 | 690(23.6) | 1.00 |
| $20,000– $49,999 | 2223(28.1) | 1775(32.9) | 1.39(1.21,1.61)‡ | 841(37.0) | 1.32(1.02,1.70)* |
| $50,000– $74,999 | 1023(15.4) | 722(17.9) | 1.38(1.14,1.68)† | 318(15.0) | 0.97(0.74,1.27) |
| ≥ $75,000 | 1718(32.9) | 960(29.5) | 1.07(0.89,1.29) | 433(24.4) | 0.74(0.57,0.97)* |
| Insurance Status | |||||
| No insurance | 1440(18.0) | 1343(23.3) | 1.00 | 757(32.6) | 1.00 |
| Have insurance | 5827(82.0) | 9297(76.7) | 0.72(0.63,0.83)‡ | 1525(67.4) | 0.46(0.38,0.55)‡ |
| Population density | |||||
| Urban | 3054(53.6) | 1591(50.1) | 1.00 | 731(45.3) | 1.00 |
| Suburban | 3868(43.2) | 2550(43.0) | 1.06(0.93,1.21) | 1354(50.1) | 1.37(1.12,1.68)† |
| Rural | 345(3.2) | 499(6.9) | 2.31(1.70,3.16)‡ | 197(4.6) | 1.69(1.15,2.46)† |
| Year | |||||
| 2009 | 2199(30.9) | 1695(33.5) | 1.00 | 820(36.9) | 1.00 |
| 2010 | 2406(32.8) | 1513(34.0) | 0.95(0.83,1.10) | 738(33.4) | 0.85(0.68,1.07) |
| 2011 | 2662(36.3) | 1432(32.4) | 0.82(0.69,0.97)* | 724(29.8) | 0.69(0.56,0.84) |
*
p<0.05,
†
p<0.01,
‡
p<0.001
a
The comparison group is lifetime nonmedical ADHD stimulant users.