Table 2.
Three-year Course of Past-Year Substance Use Disorders and Comorbid Substance Use Disordersa based on NESARC Wave 1 (2001–02) and NESARC Wave 2 (2004–05)
| 2001–02 NESARC Wave 1 Past-year (n = 34,653) |
2004–05 NESARC Wave 2 Past-year (n = 34,653) |
|---|---|
| 0 SUDs (n = 31,678) | 0 SUDs: 93.1% (n = 29,601) |
| 1 SUD: 6.1% (n = 1,873) | |
| 2+ SUDs: 0.8% (n = 204) | |
| 1 SUD (n = 2,620) | 0 SUDs: 54.0% (n = 1,446) |
| 1 SUD: 40.1% (n = 1,026) | |
| 2+ SUDs: 5.9% (n = 148) | |
| 2+ SUDs (n = 355) | 0 SUDs: 33.7% (n = 126) |
| 1 SUD: 38.7% (n = 128) | |
| 2+ SUDs: 27.6% (n = 101) | |
a
All estimates are weighted. Design-adjusted Rao-Scott test of the association between Wave 1 PY disorder status and Wave 2 PY disorder status was significant at the p < 0.0001 level, suggesting substantial differences in the distribution of Wave 2 PY disorder status as a function of PY disorder status at Wave 1.
Abbreviations: NESARC = National Epidemiologic Survey on Alcohol and Related Conditions; SUD = Substance Use Disorder.