Intervention fidelity and factors affecting the process of implementing a mobile phone text messaging intervention among adolescents living with HIV : A convergent mixed-methods study in southern Ethiopia
Objective To assess the intervention fidelity and explore contextual factors affecting the process of implementing a mobile phone text messaging intervention in improving adherence to and retention in care among adolescents living with HIV, their families and their healthcare providers in southern Ethiopia. Design A convergent mixed-methods design guided by the process evaluation theoretical frame