Table 5 Likelihood of Mono- versus Polydrug Abuse by Demographic Variables and Study Years (N = 69,891)
From: Mono- versus polydrug abuse patterns among publicly funded clients
Total Users | Monodrug Users | Polydrug Users | ||||||
|---|---|---|---|---|---|---|---|---|
N = 69,891 | n = 35,875 (51.3%) | n = 34,016 (48.7%) | Odds Ratio | |||||
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 |