Fidelity: the degree to which the major components of the program have been delivered

Dosage: how much of the program is delivered?

Quality of delivery: how well or competently is the program conducted?

Adaptation: what changes, if any, are made to the original program?

Participant responsiveness or engagement: to what degree does the program attract participants’ attention and actively involve them in the intervention?

Program differentiation: in what ways is the program unique compared to other interventions?

Monitoring of control conditions: in what ways might the control condition mirror or overlap with critical parts of the new program?

Program reach: how much of the eligible population participated in the intervention?