Study design (if review, criteria of inclusion for studies)
Secondary data analyses for a randomized clinical trial
Participants
Participants (n = 153; M = 14.3 years, 55% male, 86% Caucasian, baseline FEV(1)% predicted: M = 86.7)/primary caregivers completed Daily Phone Diaries
Interventions
Daily Phone Diaries, an empirically supported adherence measure, every 4 months.
Outcome measures
adherence to airway clearance therapy (ACT)
Main results
Group-based trajectory modeling revealed the best-fitting solution was a three-group model: low-adherence (14%), medium-adherence (49%), and high-adherence (37%) groups. ACT type was the only significant predictor of adherence trajectories.
Authors' conclusions
Three trajectories of adherence to ACT for patients with CF were found. With the identification of trajectories, adherence interventions can be targeted for the subgroup at highest risk in order to prevent poor health outcomes.