Implementation for cancer prevention and control [14]
Controlled and observational studies
Evidence that a technology works
Planning programs
Guiding implementation
Conducting evaluation
The implementation stage is aligned in all models for illustrative purposes. All models in the table correspond to stage models (developed for the health sector), which are different from system models. represents six phases of assessment: social, epidemiological, behavioral and environmental, educational and organizational, administration, and policy. represents three phases of evaluation: processes, impact, and outcomes.