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Table 4 Comparison of clinical characteristics between 3% ODI < 5/h group and 3% ODI ≥ 5/h group during the third trimester of pregnancy

From: Characteristics of sleep/wake problems and delivery outcomes among pregnant Japanese women without gestational complications

 

3% ODI < 5/h

3% ODI ≥ 5/h

P value *

N

62

26

 

Age years, mean ± SD

31.4 ± 4.6

29.7 ± 4.8

0.11

Primipara, n (%)

28 (45.9)

12 (46.2)

1

Body mass index

 Pre-pregnancy kg/m2, median (IQR)

20.0 (18.6–21.6)

21.5 (20.2–22.8)

0.03

 Second trimester kg/m2, median (IQR)

22.2 (20.9–23.9)

23.8 (22.7–25.3)

0.01

 Third trimester kg/m2, median (IQR)

23.6 (22.4–25.5)

26.3 (24.2–27.4)

0.004

Weight gain

 From pre-pregnancy kg, median (IQR)

10.0 (8.0–13.1)

10.8 (9.5–13.6)

0.22

 From second trimester kg, median (IQR)

3.9 (2.5–4.4)

4.1 (3.1–5.0)

0.08

Rate of weight gain

 From pre-pregnancy %, median (IQR)

18.1 (13.8–23.4)

20.1 (18.5–21.7)

0.12

 From second trimester %, median (IQR)

6.6 (4.5–8.5)

6.8 (5.8–7.9)

0.27

  1. IQR Interquartile range, ODI Oxygen desaturation index, SD Standard deviation
  2. *Based on unpaired t-test for normally distributed data, Mann-Whitney U test for non-normally distributed data, or Fisher’s exact test for categorical data