Detecting central sleep apnea in adult patients using WatchPAT-a multicenter validation study.

The highly significant correlations between sleep-disordered conditions can be appreciated in the scatter plots shown in Fig. 4a, b , which plot sleep apnea measurements produced by the WatchPAT and PSG, respectively, and demonstrate the clear correlations between total AHI (Fig. 4a ) and central AHI (Fig. 4b ).

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