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Table 1 Maternal characteristics and delivery outcomes – maternal characteristics and delivery outcomes of participants overall and comparison between low third trimester growth velocity and the remainder of the cohort

From: Reduced growth velocity across the third trimester is associated with placental insufficiency in fetuses born at a normal birthweight: a prospective cohort study

 

Total analysis cohort (n = 308)

Low third trimester growth velocitya(n = 26)

Normal growth velocity (n = 282)

P

Age, years

31.0 (4.2)

31.9 (2.5)

30.9 (4.3)

0.23

Booking BMI, kg/m2

26.9 (24.4–30.1)

24.8 (23.1–28.5)

27.0 (24.6–30.1)

0.02

Smoking status

 Current smoker

 Ex-smoker

 Never

 Unknown

5 (1.6%)

84 (27.3%)

218 (70.8%)

1 (0.3%)

0 (0.0%)

4 (15.4%)

22 (84.6%)

0 (0.0%)

5 (1.8%)

80 (28.4%)

196 (69.5%)

1 (0.4%)

0.26

Gestational hypertension or preeclampsia

42 (13.6%)

5 (19.2%)

37 (13.1%)

0.37

GDM

38 (12.3%)

2 (7.7%)

36 (12.8%)

0.75

Onset of delivery

 Induction of labour

 Spontaneous labour

 No labour

147 (47.7%)

139 (45.1%)

22 (7.1%)

9 (34.6%)

16 (61.5%)

1 (3.8%)

138 (48.9%)

123 (43.6%)

21 (7.4%)

0.21

Mode of delivery

 Normal vaginal delivery

 Instrumental delivery

 Emergency caesarean

 Elective caesarean

117 (38.0%)

101 (32.8%)

70 (22.7%)

20 (6.5%)

14 (53.8%)

7 (26.9%)

4 (15.4%)

1 (3.8%)

103 (36.5%)

94 (33.3%)

66 (23.4%)

19 (6.7%)

0.37

Birthweight, g

3453 (431.0)

3160 (396.8)

3480 (424.6)

0.0003

Customised birthweight centile

49.9 (26.7–72.6)

35.0 (22.7–42.8)

52.9 (27.6–74.2)

0.007

Gestational age at birth, weeks

39.9 (38.9–40.6)

39.7 (37.7–40.3)

40.0 (39.0–40.7)

0.03

  1. Data presented as mean (standard deviation) or median (interquartile range) depending on distribution for continuous variables, and as number (%) for categorical variables
  2. BMI body mass index, GDM gestational diabetes mellitus
  3. aLow third trimester growth velocity is an EFW growth velocity of < –30 centiles over 8 weeks