The answer to this question will ultimately depend on the particular program in question. Some rehab centers prove to be better than others. Here are a few tips to evaluate the success rate of chemical rehab programs: [url]http://www.ehow.com/how_5800853_evaluate-success-chemical-dependency-programs.html[/url].
The average success rate of chemical dependency rehab is between 2% to 20%, depending on the particular chemical the person is dependent on.