Table 2 Description of measures and assessment schedule

Implementation outcomes:

 Feasibility

• CHW attendance in the training (> 75% as benchmark)

X

• Feasibility subscale of the Dissemination and Implementation measure [45]

X

X

• Qualitative interviews

X

 Acceptability

• Acceptability subscale of the Dissemination and Implementation measure [45]

X

X

• Qualitative interviews

X

 Fidelity

• Fidelity rating of CHW roleplays (using Fidelity checklist)

X

X

• Qualitative interviews (barriers to fidelity)

X

Preliminary effectiveness outcomes:

 CHW stigma

• Social distance scale [46]

X

X

X

X

• Coding of stigmatizing responses in role plays based on case vignettes

X

X

X

Covariates

 CHW characteristics

• Demographic characteristics, prior mental health and SU training, years in current role, qualifications

X

 History of mental health or SU

• Personal or family history of mental health or substance use concerns

X