Behind the Wheel: Process Evaluation of a Safe-Transport Program for Older Drivers Delivered in a Randomized Controlled Trial

摘要: This process evaluation explores relationships between program outcomes and intervention implementation in a trial evaluating "Behind the Wheel," an education-based safe-transport for older drivers. Participants (intervention group) were 190 Sydney drivers aged ⩾75 years (M = 80 ± 4years). Process measures included fidelity, dose delivered, received. Outcomes self-reported driving regulation objectively measured exposure. Relationships explored using regression models. Older who took ownership of retirement self-regulation by developing plans more likely to reduce their weekly driving, (β 38 km, 95% confidence interval (CI) [7.5,68.7]), night 7 CI [3.5, 10.4]). Drivers age (odds ratio [OR] 1.1/year older, [1.05, 1.3]) had greater odds plans. Female (OR 2.7,95% [1.1, 6.9]), with poorer function 1.2/5-point decrease on DriveSafe, [1.04, 1.4]), worse health 1.2/additional medication, [1.02, 1.5]) safe mobility greatest impact lower functioning A stronger message was delivered received, as intended, health. Our logic model can help channel resources benefit most.