Substance use treatment; Treatment for co-occurring substance use plus either serious mental health illness in adults/serious emotional disturbance in children; Residential/24-hour residential; Long-term residential; Psychiatric hospital; Does not use medication assisted treatment for alcohol use disorder; Does not use MAT for opioid use disorders; Clonidine; Medication for mental disorders; Anger management; Brief intervention; Cognitive behavioral therapy; Motivational interviewing; Relapse prevention; Substance use disorder counseling; Telemedicine/telehealth therapy; Trauma-related counseling; 12-step facilitation; Private non-profit organization; Medicaid; Federal military insurance (e.g., TRICARE); Private health insurance; Cash or self-payment; State-financed health insurance plan other than Medicaid; Adolescents; Clients who have experienced trauma; Comprehensive mental health assessment; Comprehensive substance use assessment; Outreach to persons in the community; Complete medical history/physical exam; Screening for tobacco use; Screening for substance use; Screening for mental disorders; Drug and alcohol oral fluid testing; Drug or alcohol urine screening; TB screening; Metabolic syndrome monitoring; Aftercare/continuing care; Discharge Planning; Outcome follow-up after discharge; Housing services; Substance use disorder education; Smoking/vaping/tobacco cessation counseling; Individual counseling; Group counseling; Family counseling; Vocational training or educational support (for example, high school coursework, GED preparation, etc.) ; Smoking not permitted; Children/adolescents; Female; Male; Vaping not permitted; Case management service; Mental health services; Social skills development; Transportation assistance; Integrated primary care services; Suicide prevention services