Drug and Alcohol Rehab Success RatesMiramar Treatment â 866.382.5442 The question of drug and alcohol rehab success rates is frequently asked, but difficult to answer due to a couple of primary considerations. The first is a result of deficiencies in reporting on the part of drug and alcohol rehab programs, which are unwilling to provide confidential information on their past clients. And, even if the drug and alcohol rehab programs provide such information, there is no way to verify the past patients' accuracy in their self-reporting. The second consideration regards the lack of a standardized definition of âsuccess,â relative to drug and alcohol rehab treatment. Most rehab programs have their own definition of treatment success, if they have any definition at all, which often doesn't correlate with the definitions of other programs. There is a growing acceptance of a standardized definition of success, which is the total number of days sober out of a 365-day period, post treatment. If drug and alcohol rehab success rates are a ...