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. 2018 Mar 15;14(3):319–325. doi: 10.5664/jcsm.6970

Figure 2. ROC curve identifying pathologic apnea and hypopnea events from sleep for the WatchPAT and PSG.

Figure 2

The comparison threshold was set at PSG-AHI ≥ 30 events/h on PSG. PSG = polysomnography, PSG-AHI = apnea-hypopnea index as measured by PSG, ROC = receiver operating characteristic.