---"There were limitations to the study," said Farabee. "It wasn't designed to measure what's happened beyond the first six months. All we know is that there was a difference in arrest rates."---
All six months will tell you is that people who have been to jail are more frightened about going back than people that haven't been to jail. If you want to know if the rehab is working you've got to look at least a year and a half down the line, and I would like to see data after three years. I can tell you that the portion of addicts that recover is painfully small.
If an addiction is pleasureable, its hard to let go of it. Recovered addicts face the temptation the rest of their lives. It takes a strong mind not to relapse. No wonder most people just slide back into their bad habits - its comfortable, like a second skin.