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