Figure 8.7 is a bar graph depicting the locations where past year substance dependence or abuse treatment was received among persons aged 12 or older in 2002. Over 2 million persons received treatment in self-help groups, 1.5 million received treatment in outpatient rehabilitation, 1.1 million received treatment in inpatient rehabilitation, 1.0 million received treatment in a mental health center, 860,000 received treatment in hospital inpatient, 520,000 received treatment in a private doctor's office, 470,000 received treatment in an emergency room, and 260,000 persons received substance dependence or abuse treatment in a prison or jail.