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9±1.1 vs. 45.5±1.1, p0.001) and a higher percentage of adequate chest compression depth (51.0±4.1 vs. 26.9±4.2, p0.001). This significant difference was maintained until 6 months after training, but there was no difference at 9 months after training. However, there was no significant difference in the chest compression rate and the correct hand position at any time point. CPR training with a real-time visual feedback manikin improved skill acquisition in chest compression depth, but only until 6 months after the training. It cou