Table 1 Clinical characteristics of pregnant women recruited in the study

From: Performance of machine learning-based models to screen obstructive sleep apnea in pregnancy

 

Total (n = 402)

Training set (n = 286)

Test set (n = 116)

P value

AHI, events/h

7.54 ± 10.32

7.54 ± 10.80

7.53 ± 9.01

0.991

Age, years

33.53 ± 4.12

33.53 ± 4.07

33.55 ± 4.22

0.958

Gestational age, weeks

26.73 ± 8.58

26.83 ± 8.67

26.47 ± 8.35

0.708

BMI before pregnancy, kg/m2

27.16 ± 5.34

27.04 ± 5.24

27.47 ± 5.59

0.469

BMI, kg/m2

29.81 ± 4.99

29.77 ± 4.90

29.89 ± 5.20

0.831

Neck circumference, cm

36.51 ± 2.97

36.38 ± 2.63

36.82 ± 3.65

0.179

History of snoring, yes, n (%)

196 (48.8%)

140 (49.0%)

56 (48.3%)

1.000

HDP, n (%)

232 (57.5%)

162 (56.6%)

70 (60.3%)

0.977

HIP, n (%)

168 (41.8%)

119 (41.6%)

49 (42.2%)

1.000

Enlarged tongue, yes, n (%)

339 (84.3%)

249 (87.1%)

90 (77.6%)

0.230

STOP questionnaire Question No.1, Yes, n (%)

72 (17.9%)

49 (17.1%)

23 (19.8%)

0.982

BQ Question No.1, snore or not, n (%)

311 (77.4%)

228 (79.7%)

83 (71.6%)

0.534

BQ Question No.11, BMI >30 kg/m2, n (%)

187 (46.5%)

132 (46.2%)

55 (47.4%)

1.000

  1. STOP Question No.1: Do you snore loudly (louder than talking or loud enough to be heard through closed doors)?
  2. BQ Question No.1: Do you snore?
  3. BQ Question No.11: Does your BMI larger than 30 kg/m2?
  4. Continuous variables were presented as mean ± SD and evaluated by t-test. Categorical variables were presented as n (%) and evaluated by the Chi-square test.
  5. AHI apnea-hypopnea index, BMI body mass index, HDP hypertensive disorders of pregnancy, HIP hyperglycemia in pregnancy, BQ Berlin questionnaire, ESS Epworth sleepiness scale.
  6. *P value from comparing between the training set and test set.
Back to article page