Table 1 Characteristics of patients in the study

Age (years)

56.1 ± 10.6

56.1 ± 10.9

56.1 ± 10.1

0.993

Male (%)

650(85.4)

356(87.9)

294(82.6)

0.038

BMI (kg/m²)

27.2 ± 3.7

28.3 ± 3.6

26.0 ± 3.33

< 0.001

Neck circumference (cm)

41(38–43)

41.5(39–44)

40(37.5–42)

< 0.001

Waist circumference (cm)

99(94–106)

102(96–109)

96(91–102)

< 0.001

Hip circumference (cm)

101(97–106)

102(99–108)

100(96–104)

< 0.001

Micrognathia (%)

54(7.0)

40(9.9)

14(3.9)

0.001

Antiadoncus (%)

441(58)

238(58.8)

203(57)

0.627

Upper airway obstruction (%)

351(46.1)

203(50.1)

148(41.6)

0.018

Systolic BP (mm/Hg)

127(118–138)

127(119–139)

126(117–137)

0.291

Diastolic BP (mm/Hg)

77(77–85)

79(70–86)

75(70–82)

0.012

Hypertension (%)

489(64.3)

281(69.4)

208(58.4)

0.002

Hyperlipidemia (%)

254(33.4)

131(32.3)

123(34.6)

0.520

Diabetes mellitus (%)

231(30.4)

124(30.6)

107(30.1)

0.867

Current smoking (%)

337(44.3)

194(47.9)

143(40.2)

0.032

Prior stroke (%)

88(11.6)

50(12.3)

38(10.7)

0.472

Previous MI (%)

128(16.8)

66(16.3)

62(17.4)

0.680

Previous PCI (%)

166(21.8)

94(23.2)

72(20.2)

0.320

Previous CABG (%)

522(68.6)

284(70.1)

238(66.9)

0.332

LDL-cholesterol (mmol/L)

2.38(1.86–3.09)

2.41(1.92–3.05)

2.38(1.79–3.20)

0.770

HDL-cholesterol (mmol/L)

1.01(0.87–1.18)

0.98(0.86–1.16)

1.03(0.89–1.21)

0.017

Total cholesterol (mmol/L)

4.07(3.42–4.94)

4.08(3.5–4.85)

4.05(3.35–5.09)

0.951

Triglyceride (mmol/L)

1.52(1.08–2.19)

1.62(1.15–2.30)

1.43(1.03–2.05)

0.001

LVEF (%)

62(58–66)

62(57–66)

63(60–66)

0.172

hsCRP (mg/L)

1.79(0.76–5.1)

2.37(0.87–6.25)

1.22(0.52–3.31)

< 0.001

HbA1C (%)

6.1(5.6–7.0)

6.1(5.7–7.1)

6(5.6–6.9)

0.103

Fasting glucose (mmol/L)

6(5.37–7.51)

6.10(5.35–7.56)

5.89(5.38–7.39)

0.264

AHI (events/h)

16.3(8.4–29.4)

28.2(20.3–42.8)

8.0(4.5–11.1)

< 0.001

ODI (events/h)

16.6(9.5–27.6)

26.5(19.4–38.7)

9.1(5.7–12.1)

< 0.001

Minimum SaO₂ (%)

86(82–88)

83(78–86)

88(85–89)

< 0.001

Time with SaO₂ < 90% (%)

3(1–12)

7(2–20)

1(0.2–3)

< 0.001

ESS

7(3–11)

8(4–12)

6(3–10)

< 0.001

SBQ

4(4–5)

4(3–5)

3(3–4)

< 0.001