. Author manuscript; available in PMC: 2018 May 1.

Published in final edited form as: J Magn Reson Imaging. 2016 Sep 14;45(5):1371–1378. doi: 10.1002/jmri.25463

Table 1.

Sample Characteristics.

Variables	Sleepy group (n = 12)	Non-sleepy group (n = 17)	p-value^†
Age range (years)	30–55	34–54	NA
Age (years)	45.6±7.3	46.1±8.8	0.867
BMI (kg/m²)	36.8±6.0	32.1±5.9	0.095
Systolic pressure (mmHg)	130.4±11.6	129.1±16.6	0.843
Diastolic pressure (mmHg)	78.4±5.0	74.3±12.8	0.399
Handedness (right)	12	17	NA
AHI index	58.8±43.0	43.1±31.7	0.305
Nadir SpO₂ (%)	84.9±8.1	83.7±11.8	0.795
SpO₂ Baseline (%)	91.5±5.8	91.2±4.3	0.881
Days of CPAP use (>6h/day)	30	33.5	0.411
Mean CPAP pressure (cmH₂O)	10.6±1.6	9.8±3.0	0.504
ESS	8.9±5.0	5.7±4.5	0.127
PVT lapses	17.4±21.7	1.9±1.7	0.012
Mean Reaction Time	398.7±165.1	271.5±28.3	0.007

Data are expressed as mean ± standard deviation unless otherwise indicated.

Significant statistical difference is shown in bold (using p < 0.05 as a threshold).

^†

p-values were obtained using a Mann-Whitney U-test between groups.

NA: Not Available.