Background: Vest Prevention of Early Sudden Death Trial did not demonstrate a significant reduction in arrhythmic death with the wearable cardioverter-defibrillator (WCD), but compliance with the device may have substantially affected the results. ThePletcher influence of WCD compliance on outcomes has not yet been fully evaluated. Methods: Using linear and pooled logistic models, we performed as-treated analyses omitting person-time in the hospital and adjusted for correlates of WCD compliance. To assess the impact of early stopping of WCD, we performed a per-protocol Kaplan-Meier analysis, censoring after the last day the WCD was worn. Interactions of potential effect modifiers with treatment assignment and WCD compliance on outcomes were investigated. Finally, we used linear models to identify predictors of WCD compliance. Results: A per-protocol analysis demonstrated a significant reduction in total (P
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Olgin, J. E., Lee, B. K., Vittinghoff, E., Morin, D. P., Zweibel, S., Rashba, E., … Pletcher, M. J. (2020). Impact of wearable cardioverter-defibrillator compliance on outcomes in the VEST trial: As-treated and per-protocol analyses. Journal of Cardiovascular Electrophysiology, 31(5), 1009–1018. https://doi.org/10.1111/jce.14404
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