Effectiveness of simplified refresher CPR training with chest compression-only CPR : a randomized controlled trial

INTERVENTION: The refresher training course group members were given a 45‐minute training program consisting of continuous chest compressions and an AED operation and 15‐minute refresher training course after 6 month. The control group members were given a 45‐minute training program consisting of continuous chest compressions and an AED operation. CONDITION: Cardiac arrest PRIMARY OUTCOME: The primary outcome measures is the net number of appropriate chest compressions performed during two‐minute test period one year after the training SECONDARY OUTCOME: One year after the training; 1.Check consciousness ; 2.Call for help ; 3.Call for AED ; 4.Time to first chest compression; 5. Number of chest compressions during two‐minute test period ; 6. Number of chest compressions with appropriate depth during two‐minute test period ; 7. Number of chest compressions with correct hand position during two‐minute test period ; 8. Number of chest compressions with appropriate recoil during two‐minute test period ; 9.Time without chest compressions ; 10.Tune on AED ; 11.Correct positioning of defibrillator pad ; 12.clear self and area ; 13. Time to first AED defibrillator; 14. Awareness of CPR and AED use INCLUSION CRITERIA: General public 18 years of age or older living in Japan.