Fig. 4

Bland-Altman plots for PSG-AHI and Biologix-ODI. (a) Bland-Altman plot for PSG-AHI and Biologix-ODI without sleep prediction. (b) Bland-Altman plot for PSG-AHI and Biologix-Sleep-ODI with sleep prediction. AHI apnea-hypopnea index, PSG polysomnography, ODI oxygen desaturation index considering total recording time, Sleep ODI oxygen desaturation index considering total sleep time.