Table 2.

Neuropsychological data

Neuropsychological tests	OSAHS (n = 18)	Healthy controls (n = 18)	t	P
MMSE	27.5 ± 1.7	28.4 ± 1.2	-1.91	0.065
TMT-A	48.1 ± 16.6	36.4 ± 16.1	2.15	0.039*
TMT-B	118.9 ± 61.4	85.7 ± 36.8	1.97	0.057
DST-forward	8.1 ± 2.0	8.7 ± 1.1	-1.14	0.264
DST-backward	5.2 ± 1.8	5.2 ± 1.7	0.00	1.000
RAVLT-immediate recall	39.1 ± 8.0	43.8 ± 7.2	-1.84	0.074
RAVLT-delayed recall	6.7 ± 1.6	9.1 ± 2.7	-3.21	0.003*
RAVLT-learning	6.0 ± 1.4	6.4 ± 1.5	-0.80	0.429
RAVLT-forgetting	3.7 ± 1.7	2.8 ± 2.1	1.30	0.204

Data are presented as average ± SD, *P < 0.05

MMSE Mini-Mental State Examination, TMT trail-making test, DST digit span test, RAVLT Rey's auditory verbal learning test