. 2019 Dec 11;9:18849. doi: 10.1038/s41598-019-55470-7

Table 1.

Evaluation parameters of the men and women.

Parameter	Men (n = 150)/Women (n = 45)	p-value
Age, yrs	60.5 ± 11.0/63.0 ± 10.6	0.17^a
Height, cm	167.7 ± 6.3/153.4 ± 5.3	<0.0001^a
Weight, kg	71.6 ± 12.9/57.5 ± 10.5	<0.0001^a
BMI, kg/ m²	25.4 ± 3.9/24.4 ± 4.2	<0.0001^a
Diabetes mellitus, %	39 (26.0)/11 (24.4)	0.83^b
Hypertension, %	98 (65.3)/21 (46.7)	0.02^b
Coronary artery disease, %	33 (22.0)/4 (8.9)	0.08^c
Heart rate, bpm	66.6 ± 9.5/ 73.4 ± 11.8	0.0001^a
MABP, mmHg	92.1 ± 11.4/87.5 ± 11.1	0.02^a
Pulse pressure, mmHg	55.4 ± 13.1/57.3 ± 13.7	0.40^a
Spherical equivalent, D	−0.5 ± 2.5/−0.5 ± 2.8	0.87^d
IOP, mmHg	12.7 ± 2.9/13.1 ± 3.3	0.45^a
OPP, mmHg	48.7 ± 7.8/45.2 ± 7.4	0.009^a
HbA1c, %	6.1 ± 0.9/6.2 ± 1.0	0.59^a
Red blood cells, ×10⁴/μl	463.2 ± 48.1/436.8 ± 39.1	0.009^a
Platelets, ×10³/μl	21.6 ± 5.5/23.3 ± 8.0	0.11^a
Cystatin C, mg/l	0.85 ± 0.16/0.75 ± 0.14	0.0003^d
AHI, times/hr	39.2 ± 22.2/29.3 ± 21.9	0.01^a
Lowest SpO2, %	81.7 ± 7.6/82.9 ± 8.3	0.38^a
Mean SpO2, %	94.9 ± 1.7/95.6 ± 1.7	0.02^a
MBR-Vessel	43.2 ± 7.5/46.4 ± 8.0	0.01^a
MBR-Tissue	12.6 ± 2.7/13.3 ± 2.7	0.12^a
MBR-All	23.3 ± 5.1/25.8 ± 5.7	0.004^a

The data are mean ± SD or number (%). ^aUnpaired t-test, ^b2 × 2 chi-square test, ^cYates 2 × 2 chi-square test, ^dMann-Whitney U-test. AHI: apnea hypopnea index, BMI: body mass index, bpm: beat per minute, D: diopters, HbA1c: glycated hemoglobin A1c, IOP: intra-ocular pressure, MABP: mean arterial blood pressure, MBR: mean blur rate, OPP: ocular perfusion pressure, SpO2: percutaneous oxygen saturation.