STAGE 3. Defining the population and objectives

What steps should be completed?

Step 1: Define the population


The inclusion and exclusion criteria refer to the conditions that will make a person eligible to participate or not in an intervention. They are particularly important in treatment or social inclusion interventions, because usually requires that the targeted people meet certain requirements to have certain guarantees of success. However, those inclusion criteria are not just needed for treatment or social integration interventions, but must also be defined in prevention, risk reduction and harm reduction interventions.

If these criteria are clarified in writing, they can be a vehicle for communication between the different people involved in providing the intervention. Once you have selected and defined the target population, it will be easy for you to list the criteria that a person has to meet in order to be eligible to participate in the intervention.

These criteria will then allow you to select and define the recruitment strategies for the intervention.