The different alcohol and drug abuse rehab services which are accessible to alcohol and drug addicted individuals in Derby can differ in several different ways. Some alcohol and drug abuse rehab programs are conducted in a residential or inpatient facility, where clients remain for the duration of their treatment which supplies a more conducive rehabilitation environment. Others offer substance abuse rehab programs on an outpatient basis which provides a sense of flexibility, although outpatient facilities may not be an appropriate substance abuse rehabilitation program for men and women in Derby who are having difficulties with long term drug or alcohol addiction problems. Whether inpatient or outpatient drug and alcohol abuse rehab programs are chosen, there are also different lengths of time that men and women will be expected to stay in the alcohol and drug rehabilitation facility. For instance, many short-term programs offer services for a month or less, whereas long-term facilities will call for at least a 12 week stay.