Table 2 Differences between normal group and OSA group after bariatric surgery.

From: Decreased serum betatrophin may correlate with the improvement of obstructive sleep apnea after Roux-en-Y Gastric Bypass surgery

Indicators

Normal group

OSA group

Age (years)

48.6 ± 11.4

50.5 ± 9.5

BMI (kg/m2)

23.8 ± 2.1

24.4 ± 2.5

NC (cm)

34.9 (33.7–36.1)

36.7 ± 4.8

WC (cm)

83.7 (80.7–86.8)

86.6 (82.1–91.2)

HC (cm)

93.9 (91.6–96.2)

95.3 (91.7–98.9)

WC/HC

0.89 ± 0.04

0.91 ± 0.06

FPG (mmol/L)

5.61 (5.05–6.18)

6.39 (5.81–6.97)*

Fasting insulin (mU/L)

5.55 (3.90–7.19)

10.0 (2.77–17.23)

HOMA-IR

1.41 (0.85–1.97)

2.82 (0.78–4.86)*

ESS

2.2 ± 2.1

5.3 ± 3.3**

Total cholesterol (mmol/L)

4.08 ± 0.84

4.39 ± 0.74

Triglyceride (mmol/L)

0.89 ± 0.33

1.22 ± 0.43*

High-density lipoprotein (mmol/L)

1.23 ± 0.27

1.19 ± 0.26

Low-density lipoprotein (mmol/L)

2.49 (2.23–2.75)

2.53 (2.05–3.00)

VFA (cm2)

42.0 ± 23.3

52.4 ± 31.0

SFA (cm2)

157.6 (128.9–186.4)

167.7 (121.3–214.1)

TFA (cm2)

199.6 (164.7–234.6)

220.1 (163.1–277.1)

Betatrophin (ng/mL)

49.57 (23.80–75.35)

121.3 (73.4–169.2)**

AHI (events/h)

2.5 ± 1.4

12.9 ± 7.1**

Mean SaO2 (%)

95.9 ± 1.3

94.7 ± 1.9*

Minimum SaO2 (%)

89.5 ± 2.3

83.9 ± 6.5**

CT90% (%)

0.1 (0–0.3)

2.3 (0.3–4.5)*

  1. Data are expressed as the mean ± SD or mean with 95% confidence interval.
  2. OSA obstructive sleep apnea, BMI body mass index, NC neck circumference, WC waist circumference, HC hip circumference, FPG fasting plasma glucose, HOMA-IR homeostasis model assessment of insulin resistance, ESS Epworth sleepiness scale, VFA visceral fat area, SFA subcutaneous fat area, TFA total fat area, AHI apnea hypopnea index, SaO2 oxygen saturation, CT90% percentage of time spent at SaO2 < 90%.
  3. *p < 0.05.
  4. **p < 0.01.
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