Table 1 Participant eligibility and screening

AYA

 1. 15–29 years of age

 2. Attend or be referred to the study site

 3. Live in the area served by a study site (i.e., not staying temporarily)

 4. Ability to speak one of the study languages (English, Bemba, or Nyanja)

 5. Screening: present with one or more common mental/behavioral health problems based on validated screening tools included in the audio computer-assisted self-interviewing (ACASI) system. Specifically, the following screening tools and cutoff values:

  a. Youth Self Report Internalizing Scale (≥ 14)

  b. Youth Self Report Externalizing Scale (≥ 8)

  c. Child PTSD Symptom Scale (≥ 12)

 6. Exclusion:

  a. Currently on unstable psychiatric drug regimen (e.g., altered in past 2 months)

  b. Suicide attempt or active and severe self-harm in the past month

  c. Psychotic disorder or severe mental illness

Trainers and counselors

 1. 18 years of age or older

 2. Interest in providing CETA

 3. Time/availability to participate in the study

 4. Minimal education level is comparable to a high school education

 5. Ability to speak English fluently and speak at least 1 local language (Nyanja or Bemba)

 6. Completion of an in-person interview with study team investigators demonstrating strong communication skills

 7. Planning to stay in the study area (Lusaka) to provide treatment to clients and/or training to new counselors

 Trainers: in addition to all of the above:

 8. Interest in teaching CETA

 9. Completion of the CETA training

 10. Completion of a minimum of 3 CETA cases under supervision