| Region 4 | |||||||||
| Adult Secondary Drug of Abuse | |||||||||
| Source: IDHW Client Information System | |||||||||
| 1999-2000 | 2000-2001 | 2001-2002 | 2002-2003 | 2004-2005 | 2005-2006 | 2006-2007 | 2007-2008 | ||
| Alcohol | 123 | 137 | 111 | 94 | 102 | 156 | 253 | 253 | |
| Methamphetamines | 77 | 83 | 107 | 73 | 53 | 106 | 166 | 161 | |
| Marijuana | 246 | 242 | 300 | 213 | 118 | 193 | 306 | 305 | |
| Cocaine | 63 | 38 | 35 | 20 | 16 | 24 | 45 | 50 | |
| Heroin | 14 | 16 | 10 | 5 | 3 | 7 | 17 | 27 | |
| Other Compounds | 1999-2000 | 2000-2001 | 2001-2002 | 2002-2003 | 2004-2005 | 2005-2006 | 2006-2007 | 2007-2008 | |
| Non-Rx Methadone | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | |
| Other Opiates/Synth | 11 | 12 | 10 | 7 | 12 | 11 | 19 | 25 | |
| PCP | 0 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | |
| Hallucinogens | 6 | 8 | 5 | 3 | 1 | 3 | 5 | 2 | |
| Other Amphetamines | 5 | 3 | 1 | 0 | 0 | 1 | 6 | 6 | |
| Other Inhalants | 0 | 0 | 0 | 0 | |||||
| Benzodiazpine | 1 | 0 | 0 | 0 | 2 | 1 | 3 | 2 | |
| Other Tranquilizers | 1 | 1 | 1 | 0 | 0 | 1 | 2 | 1 | |
| Barbituates | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Other Sedatives | 0 | 0 | 1 | 0 | 0 | 2 | 2 | 0 | |
| Inhalants | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | |
| Over-the-Counter | 0 | 1 | 0 | 1 | 1 | 3 | 0 | 0 | |
| Other | 0 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | |
| None | 273 | 287 | 302 | 257 | 193 | 410 | 457 | 274 | |