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A: Bar graph representation of the time needed to achieve 75% efficacy during the baseline unaided module compared to the smartwatch-based module for all 30 subjects. B: Comparison between the baseline unaided module, the smartwatch-based module, and the defibrillator-based module for the 20 subjects in the in-hospital and out-of-hospital rescuer groups. Data are mean ± SD. Numbers at the top of the error bars represent the number of subjects achieving 75% efficiency. ∗P < .05.
