Feasibility of a randomized controlled trial to evaluate Text Reminders for Immunization Compliance in Kids (TRICKs)

► This feasibility study was not powered to find significant differences between groups. ► Parents were willing to receive text message reminders, but many had loss of cellular service at 7-month follow-up. ► Per-protocol analysis of text reminders showed increased children receiving vaccines and receipt of vaccines on time; though not significant. ► Post intervention parents are highly supportive of text message reminders. ► A fully powered RCT is needed.