A study of sleep-wake determination accuracy by actigraphic measurement with automatic algorithms compared to polysomnography - A study of sleep-wake determination accuracy by actigraphic measurement with automatic algorithms compared to polysomnography

The accordance as to the sleep/wake judgment per epoch was 87.4% between the newly developed algorithm and PSG, which was equal to previous reports. There were no systematic and significant differences as to the sleep onset, sleep offset, and total sleep time between either two algorithm and PSG. There was significant difference as to the wake after sleep onset with shorter estimation by actigraphic two algorithms, and the total sleep time with longer estimation by them, comparing to PSG.