Asthma Controller Adherence After Hospitalization

Poor adherence to inhaled controller medications for asthma is a well-documented and poorly understood problem with a disproportionate prevalence and impact on urban minority children. Recent randomized trials from other countries using electronic monitoring of inhaled steroids with automated adherence feedback demonstrated dramatic improvements in adherence behavior. Whether similar intervention effects can be expected in high-risk children in the US is unknown. To accomplish the above objectives, investigators propose to enroll 40 children and their parents (20 parent/child dyads in each arm) in a two-month pilot randomized controlled trial of an automated adherence feedback intervention. Children will be from West Philadelphia, ages 4-11, and must be hospitalized for asthma at The Children's Hospital of Philadelphia (CHOP). The study intervention will include daily automated medication reminders via text messaging for those subjects randomized to the intervention group. Inhaled controller medication adherence will be measured in both groups using electronic monitors affixed to the top of the canister of the inhaled steroid medication and adherence trajectories will be determined using group-based trajectory modeling. Factors associated with adherence trajectories will be assessed using a survey completed upon enrollment, completion of the treatment phase (1 month) and upon completion of follow up (2 months). Feasibility outcomes will include use, acceptance, and preferences. Limited efficacy outcomes will include change in parent-reported asthma control and difference in average percent adherence between intervention and control conditions. Findings from this study will provide preliminary data for a larger study evaluating the mechanisms of differential adherence trajectories and the effect of an adherence feedback intervention for different mechanisms of non-adherence.