Table 2: Comparison of demographic and clinical characteristics of type 2 diabetic patients with and without OSA

Characteristic Group A Group B t/χ2 P-value
Age, mean ± SD, years 59.75 ± 12.08 57.32 ± 13.05 0.808 0.422
Men, No. (%) 20(55.6) 14(41.2) 1.447 0.229
Duration of DM, mean ± SD, years 8.60 ± 7.32 5.88 ± 5.23 1.775 0.080
BMI, mean±SD, kg/m2 26.43 ± 3.93 25.04 ± 3.29 1.595 0.115
Waist circumference 95.00 ± 11.24 88.74 ± 8.34 2.635 0.010
Habitual alcohol drinker, No. (%) 2(5.6) 4(11.8) 0.860 0.354
Current smoker, No. (%) 13(36.1) 9(26.5) 0.754 0.385
Hypertension (%) 27(75.0) 23(67.6) 0.463 0.496
SBP, mean ± SD, mmHg 139.03 ± 15.53 134.41 ± 14.55 1.281 0.204
DBP, mean ± SD, mmHg 83.89 ± 8.63 82.94 ± 7.29 0.495 0.622
FBG, mean ± SD, mmol/L 10.34 ± 4.04 10.48 ± 3.80 -0.150 0.881
HbA1c, mean ± SD, % 9.16 ± 2.30 9.90 ± 1.70 -1.528 0.131
ESS, mean±SD 8.92 ± 3.52 7.21 ± 3.94 1.920 0.059
TG, median (25%-75%), mmol/L 2.03 ± 1.11 2.14 ± 1.58 -0.339 0.736
LDL-C, mean ± SD, mmol/L 3.27 ± 0.99 3.24 ± 1.18 0.138 0.890
HDL-C, mean ± SD, mmol/L 1.24 ± 0.41 1.18 ± 0.39 0.735 0.465
AHI, min-max 7-67 0-5 8.432 < 0.001
ODI, min-max 15(0-61) 0-7 7.282 < 0.001
LSaO2, mean ± SD 77.31 ± 9.12 84.62 ± 6.14 -3.912 < 0.001
C-RI, mean ± SD 0.72 ± 0.05 0.68 ± 0.05 3.501 0.001
C-IMT, mean ± SD, mm 0.93 ± 0.14 0.83 ± 0.16 2.800 0.007


Data are presented as mean values ±SD, minimal–maximal values, or as number and percentage. BMI: Body Mass Index; SBP: Systolic Blood Pressure; DBP: Diastolic Blood Pressure; FBG: Fasting Blood Glucose; HbA1c: HaemoglobinA1c; TG: Triglycerides; HDL-C: High-Density Cholesterol; LDL-C: Low-Density Cholesterol; C-IMT: Common Carotid Intima-Median Thickness; C-RI: Carotid Resistance Index; AHI: Apnea-Hypopnea Index; ODI: Oxygen Desaturations Index; LSaO2: Lowest Arterial Oxygen Saturation