Screening for Sleep Apnoea in Mild Cognitive Impairment: The Utility of the Multivariable Apnoea Prediction Index

Table 3

ROC curve analysis demonstrating optimal MAPI scores according to various apnoea-hypopnoea index (AHI) scores for the whole sample, MCI, and control sample.

	Whole sample (𝑛=49)			MCI sample (𝑛=24)			Control sample (𝑛=25)
	AHI ≥ 5	AHI ≥ 15	AHI ≥ 30	AHI ≥ 5	AHI ≥ 15	AHI ≥ 30	AHI ≥ 5	AHI ≥ 15	AHI ≥ 30
AUC	0.567	0.580	0.502	0.576	0.504	0.650	0.699	0.671	0.761
Sensitivity	67.65*	88.24*	100.00*	88.24*	20.00*	75.00*	82.35*	100.00*	100.00*
Specificity	60.00*	31.25*	18.60*	42.86*	64.29*	70.00*	75.00*	38.89*	52.17*
MAPI cutoff	(0.29)	(0.21)	(0.15)	(0.65)	(0.56)	(0.27)	(0.27)	(0.22)	(0.33)

ROC: receiver operating characteristic; MAPI: multivariable aponea prediction index; AHI: apnoea-hypopnoea index; AUC: area under the curve. *Criterion corresponding with the highest Youden index.