Discussion
The aim of this study was to describe parents’ experiences of barriers and facilitators related to taking part in the HSSP programme, a parental support programme carried out in the school setting in preschool-class. The findings of the deductive analyses using CFIR revealed that parental experiences of barriers and facilitators to participating in the HSSP were identified in two new constructs not included in the current version of CFIR: Social factors and Cooperation. Taken together, the findings pertaining to parental experiences highlighted several aspects of importance when conducting parental support programmes in the school-setting. These findings were related to the importance of: (1) Adaptation of the intervention to parents abilities with different social and cultural backgrounds; (2) follow-ups, reminders and regular provision of information connected to health matters; (3) the commitment and efforts of the deliverers of the intervention; (4) the need for repetition of health information given by the deliverers of the intervention; (5) encouraging the whole family and key people around them to get involved through the intervention activities; (6) being aware that the intervention may have unexpected impacts and that circumstances related to wide variation in social and cultural conditions can complicate the execution of the intervention; and (7) the cooperation and a well-functioning interaction between parents and deliverers of the intervention. These findings may help to improve implementation and fidelity to the HSSP components and other similar school-based parental support programmes.