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. 2021 Oct 19;11:20697. doi: 10.1038/s41598-021-00052-9

Table 1.

Demographic, biochemistry, and sleep data of all the 108 study participants.

Cohort-1 Cohort-2
PS subjects (n = 16) OSA patients(n = 56) p value PS subjects (n = 8) OSA patients (n = 28) p value
Age, years 41.1 ± 12.8 43.3 ± 8.6 0.532 44.8 ± 9.3 50.2 ± 12.4 0.262
Male Sex, n (%) 14 (87.5) 50 (89.3) 0.376 6 (75) 23 (82.1) 0.653
BMI, kg/m2 25.2 ± 2.9 25.9 ± 2.8 0.383 24.6 ± 3 26.6 ± 3.1 0.114
AHI, events/hour 3.7 ± 2.5 66.9 ± 12  < 0.001 3.2 ± 2.6 57.2 ± 2.1  < 0.001
ODI, events/hour 2.1 ± 2.2 55.9 ± 20.7  < 0.001 1.2 ± 1.2 45.7 ± 25.9  < 0.001
Mean SaO2, % 96.4 ± 1 93.6 ± 2.4  < 0.001 95.8 ± 0.8 93.7 ± 2.5 0.003
Minimum SaO2, % 86.1 ± 10.1 67.5 ± 14.6  < 0.001 91.2 ± 3.6 70.2 ± 10.7  < 0.001
Snoring index, counts/hour 107 ± 201.5 377.8 ± 197.7  < 0.001 66.4 ± 60.8 358.5 ± 174.3  < 0.001
hs CRP, mg/L 1.79 ± 1.11 3.64 ± 4.73 0.013 NA NA
ESS 9.7 ± 4.1 10.6 ± 5.5 0.553 9.6 ± 5.7 10.3 ± 4.9 0.776
EDS, n (%) 4 (21.4) 16 (88.9)  < 0.001 2 (33.3) 10 (41.7) 0.709
Current smoking, n (%) 6 (37.5) 21 (44.7) 0.616 2 (28.6) 9 (32.1) 0.856
Alcoholism, n (%) 0 (0) 3 (6.4) 0.3 0 (0) 2 (7.1) 0.466
Cholesterol, mg/dl 201.5 ± 42.6 196.3 ± 33.5 0.616 180.4 ± 37.6 196.2 ± 42.3 0.442
Triglycerides, mg/dl 166.2 ± 130.7 153.5 ± 86.5 0.566 131.6 ± 137.2 137.2 ± 89.3 0.9
Fasting sugar, mg/dl 100.9 ± 18.8 100.7 ± 11.8 0.944 98 ± 6.4 100.6 ± 25.5 0.823
Hypertension, n (%) 3 (18.8) 18 (35.3) 0.213 2 (25) 9 (32.1) 0.699
DM, n (%) 1 (6.3) 2 (3.9) 0.694 1 (12.5) 4 (14.3) 0.898
Heart disease, n (%) 1 (6.3) 4 (7.8) 0.832 0 (0) 0 (0) 1
Stroke, n (%) 0 (0) 4 (7.8) 0.248 1 (12.5) 0 (0) 0.058
CKD, n (%) 0 1 (1.8) 0.59 0 (0) 0 (0) 1

PS primary snoring, OSA obstructive Sleep Apnea, BMI body mass index, AHI apnea hypopnea index, SaO2 arterial oxyhemoglobin saturation, ODI oxygen desaturation index, the number of dips > 4% of basal SaO2%//hour, hsCRP hypersensitivity C-reactive protein, ESS Epworth Sleepiness Scale, EDS excessive daytime sleepiness, DM diabetes mellitus, CKD chronic kidney disease.