Table 2.

Correlation coefficients between the MAPI and clinical and polysomnographic data for controls (n = 37) and patients with mild cognitive impairment (MCI) (n = 37).

	MAPI Controls	MAPI MCI
Age	0.458**	−0.165
Body mass index	0.491**	0.499**
MMSE score	−0.086	−0.084
CIRS, total score	0.325	0.287
Apnoea-hypopnoea index (nonparametric test)	0.474* (n = 25)	−0.141 (n = 24)
Average oxygen desaturation (non-parametric test)	0.279	−0.144
Oxygen desaturation index (non-parametric test)	0.418**	−0.077
Lowest oxygen desaturations	−0.308	−0.180

*P < 0.05, **P < 0.01.

MAPI: multivariable apnoea prediction index; CIRS: cumulative illness rating scale; MMSE: mini-mental state examination.