2.2. Participants and Recruitment
SECONDARY, RECRUITMENT
The sample was composed of teachers and counsellors of a secondary school located in Spain. It was selected out of a simple random sampling between the secondary schools to which we had access that belong to the department in Spain. The software programme ExcelThis type of population was chosen since they are considered as communitary workers that spend most of their time with their students (being able to closely observe any behavioural changes over time) aged from 15 to 18 (starting period of FEP, for the most part).For recruitment, in the first place, a random sampling of the schools that belonged to the health area was carried out. In second place, counsellors of the selected secondary school were contacted in order to participate and were sent an email with the objectives and programme of the activity, together with an informed consent form that had to be signed by the director of the centre. After establishing the pertinent inclusion and exclusion criteria, another informed consent form was given to the participants and was signed by all of them.All the participants that complied with the selection criteria were included, then performing intentional-type sampling.