Table 5 |
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|
Likelihood of Mono- versus Polydrug Abuse by Demographic Variables and Study Years (N = 69,891) |
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| Total Users |
Monodrug Users |
Polydrug Users |
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| N = 69,891 |
n = 35,875 (51.3%) |
n = 34,016 (48.7%) |
Odds Ratio |
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|
|
|
|
|
|||||
| Variable |
N |
% |
n |
% |
n |
% |
ORa |
95% CI |
|
|
||||||||
| Gender |
||||||||
| Male |
48,168 |
68.9 |
24,646 |
51.2 |
23,522 |
48.8 |
0.979c |
0.948–1.011 |
| Female |
21,723 |
31.1 |
11,229 |
51.7 |
10,494 |
48.3 |
1.021c |
0.989–1.055 |
| Ethnicity |
||||||||
| Caucasian |
46,910 |
69.2 |
26,218 |
55.9 |
20,692 |
44.1 |
1.957b |
1.893–2.023 |
| African American |
20,393 |
30.1 |
7,941 |
38.9 |
12,452 |
61.1 |
0.504b |
0.487–0.521 |
| Other |
495 |
0.7 |
269 |
54.3 |
226 |
45.7 |
1.154ns |
0.967–1.379 |
| Age |
||||||||
| <18 |
6,955 |
10.0 |
4,525 |
65.1 |
2,430 |
34.9 |
1.876b |
1.782–1.976 |
| 18–24 |
10,701 |
15.3 |
5,111 |
47.8 |
5,590 |
52.2 |
0.845b |
0.811–0.880 |
| 25–34 |
20,671 |
29.6 |
9,347 |
45.2 |
11,324 |
54.8 |
0.706b |
0.683–0.730 |
| 35–44 |
21,893 |
31.3 |
10,833 |
49.5 |
11,060 |
50.5 |
0.898b |
0.870–0.927 |
| 45–54 |
8,266 |
11.8 |
4,931 |
59.7 |
3,335 |
40.3 |
1.466b |
1.399–1.536 |
| ≥ 55 |
1,404 |
2.0 |
1,127 |
80.3 |
277 |
19.7 |
3.950b |
3.461–4.509 |
| Residential Area |
||||||||
| Urban |
35,062 |
50.2 |
17,035 |
48.6 |
18,027 |
51.4 |
0.802b |
0.779–0.826 |
| Rural |
34,829 |
49.8 |
18,840 |
54.1 |
15,989 |
45.9 |
1.248b |
1.210–1.285 |
| Year |
||||||||
| 1998 |
9,911 |
14.2 |
4,645 |
46.9 |
5,266 |
53.1 |
0.812b |
0.778–0.847 |
| 1999 |
9,123 |
13.1 |
4,327 |
47.4 |
4,796 |
52.6 |
0.836b |
0.800–0.873 |
| 2000 |
9,598 |
13.7 |
5,293 |
55.1 |
4,305 |
44.9 |
1.194b |
1.144–1.247 |
| 2001 |
10,214 |
14.6 |
5,618 |
55.0 |
4,596 |
45.0 |
1.189b |
1.139–1.240 |
| 2002 |
9,891 |
14.2 |
4,885 |
49.4 |
5,006 |
50.6 |
0.913b |
0.875–0.953 |
| 2003 |
10,738 |
15.4 |
5,711 |
53.2 |
5,027 |
46.8 |
1.092b |
1.048–1.138 |
| 2004 |
10,416 |
14.9 |
5,396 |
51.8 |
5,020 |
48.2 |
1.023ns |
0.981–1.066 |
|
|
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|
aOdds ratio of being a mono- versus a polydrug user in comparing a specific level of client demographics to all other demographic features. Odds in this table are calculated for the odds of being a mono vs. polydrug abuser, not for being male rather than female. bp < 0.0001. cp < 0.10. nsNot significant. |
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|
Kedia et al. Substance Abuse Treatment, Prevention, and Policy 2007 2:33 doi:10.1186/1747-597X-2-33 |
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