Table 2.

The positive predictive values of the nomogram at different cut-off levels of score

Cut-off values	Positive predictive values
	Any OSA	Moderate-severe OSA	Severe OSA
≥20	0.822	0.656	0.450
≥25	0.831	0.668	0.458
≥30	0.842	0.678	0.467
≥35	0.869	0.707	0.494
≥40	0.886	0.724	0.520
≥45	0.907	0.758	0.553
≥50	0.936	0.805	0.594
≥55	0.971	0.846	0.659
≥60	0.987	0.903	0.716
≥65	0.989	0.935	0.839
≥70	0.984	0.902	0.869
≥72	1	0.936	0.936

OSA: Obstructive sleep apnea.