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. 2023 May 1;19(5):865–872. doi: 10.5664/jcsm.10432

Figure 4. Comparison of Alice NightOne and ANNE.

Figure 4

Presented is the (A) 2 × 2 matrix comparing the diagnosis of moderate and severe OSA (defined as an REI greater than or equal to 15 events/h) as diagnosed by ANNE Sleep vs Alice NightOne on synchronous nights of testing, (B) scatter plot and comparing absolute REI values derived by both systems, and (C) the Bland-Altman plot demonstrating a mean bias of 0.5 events/h. CI = confidence interval, NPA = negative percent agreement, OSA = obstructive sleep apnea, PPA = positive percent agreement, REI = respiratory event index.