Table 1 Clinical characteristics of the subjects.

From: Dynamic changes in nocturnal blood glucose levels are associated with sleep-related features in patients with obstructive sleep apnea

 

No or mild OSA

Moderate to severe OSA

p-value

n = 12

n = 11

Age (years)

42.6 ± 7.1

42.1 ± 12.0

0.422

Sex (male)

9 (75.0)

10 (90.9)

0.315

BMI (kg/m2)

24.7 ± 2.4

27.7 ± 3.0

0.036

Neck circumference (cm)

36.4 ± 3.0

38.2 ± 2.4

0.121

Waist circumference (cm)

86.5 ± 7.8

92.4 ± 6.6

0.139

Polysomnography

 TST (min)

318.4 ± 58.2

258.2 ± 68.1

0.014

 N1%

16.1 ± 7.4

28.2 ± 21.0

0.116

 N2%

45.2 ± 9.6

37.4 ± 10.4

0.085

 N3%

23.6 ± 11.2

19.8 ± 12.3

0.479

 R%

15.2 ± 5.5

14.6 ± 9.1

0.951

 WASO (min)

8.2 ± 3.6

17.3 ± 17.0

0.559

 Sleep latency (min)

7.6 ± 5.4

6.5 ± 8.3

0.090

 REM latency (min)

90.3 ± 36.8

88.3 ± 51.5

0.895

 Sleep efficacy (%)

89.6 ± 3.6

81.1 ± 17.3

0.782

 Arousal index (/hr)

26.6 ± 17.9

45.6 ± 17.6

0.010

 AHI (/hr)

6.3 ± 4.3

36.7 ± 18.4

 < 0.001

 Minimum saturation (%)

88.6 ± 3.2

76.0 ± 8.6

 < 0.001

Metabolic measures

 Fasting glucose (mg/dl)

98.8 ± 11.1

102.2 ± 7.1

0.267

 HbA1c (%)

5.2 ± 0.4

5.4 ± 0.4

0.336

 Insulin (µU/mL)

5.9 ± 2.4

8.2 ± 4.7

0.356

 HOMA-IR

1.48 ± 0.70

2.07 ± 1.17

0.356

 HOMA-IR > 2.5

1 (8.3)

4 (36.4)

0.131

 FFA (µEq/L)

495.4 ± 180.1

428.6 ± 248.7

0.310

 Cholesterol (mg/dl)

205.5 ± 22.3

207.5 ± 28.3

0.666

 TG (mg/dl)

140.9 ± 74.7

169.5 ± 138.3

0.712

 HDL (mg/dl)

50.7 ± 12.0

57.0 ± 10.3

0.131

 LDL (mg/dl)

140.4 ± 23.3

133.0 ± 32.9

0.518

 3-Day CGM measures

Average

101.3 ± 29.5

111.0 ± 9.8

0.517

 SD

17.2 ± 5.3

17.3 ± 3.8

0.665

 MAD%

9.6 ± 5.1

10.6 ± 5.6

0.644

  1. OSA, obstructive sleep apnea; BMI, body mass index; TST, total sleep time; WASO, wake after sleep onset; AHI, apnea–hypopnea index; HOMA-IR, homeostatic model assessment for insulin resistance; FFA, free fatty acid; TG, triglyceride; HDL, high-density lipoprotein; LDL, low-density lipoprotein; CGM, continuous glucose monitoring; SD, standard deviation; MAD, mean amplitude.