Study Design and Study Participants Recruitment
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RECRUITMENT
This was a non-randomized controlled trial to evaluate the effectiveness of using an app to record the vaccination schedule, including reminders for parents, on increasing immunization coverage of Syrian children at the Zaatari refugees’ camp in Jordan. The study, including study participants recruitment, was conducted during the period of March through December 2019. The clinics, were located inside the camp, and they provide vaccination services for the children. We choose the clinics to be far from each other to avoid contamination effect (i.e. the clinic site would fall under the control or the intervention study group). The study was announced through posters in Arabic, in the clinics. Clinicians and social workers also informed the residents of the camp about the study. Parents interested in joining the study were fully informed about the study details. Parents who provided their informed consent were included in the study. Three vaccination clinics were included, where two clinics were under the intervention study, and one clinic was under the control study for the regular care. The intervention study arm provided the CIMA app in addition to the regular care, while the control study arm received the regular care (using the vaccination card) in addition to the usual information on the benefits of vaccination. We recruited a total of 936 children where 50.3% (