Specified inclusion criteria or purposeful selection, but participants will be volunteers in a specific research setting

Report exclusion and participation rates, dropouts, and representativeness

Include all relevant members of a defined population

Report exclusions, participation rates, drop-outs and representativeness

Measure outcomes using intent to treat assumptions and a high level of rigor

Assess both positive (anticipated) and negative (unintended) outcomes

Same as above, though measures are usually more limited

More likely to include economic outcomes

Assess willingness of stakeholders from multiple settings to adopt and adapt the program

Report on representativeness of settings, participation rate and reasons for declining

Collect data on likely treatment demands

Evaluate delivery of intervention protocol by different intervention agents (usually research staff)

Assess staff ability to implement key components of the intervention in routine practice

Evaluate consistency of intervention delivery by agency staff who are not part of research team

Assess recidivism among participants

Engage potential community settings in strategic planning efforts

Document extent to which research protocol is retained by setting/agency once the formal study is completed

Assess continuation of program over time, and especially after research phase concludes

Systematically program for and evaluate the level of institutionalization of the program elements after formal study assistance is terminated