Demographic and baseline characteristics

Normotensive pregnancy

(n = 2621)

Preeclampsia

F-test

p

Without severe features (n = 169)

With severe features (n = 23)

Age (years)

23.6 ± 4.4

24.1 ± 4.1

23.7 ± 4.3

1.28

0.27

BMI (Kg/m²)

26.8 ± 3.6

27.3 ± 3.1

27.1 ± 3.4

1.75

0.17

X²

Socio-economic class

High

81 (3.1%)

6 (3.6%)

1 (4.3%)

0.24

0.99

Middle

703 (26.8%)

46 (27.2%)

6 (26.1%)

Low

1837 (70.1%)

117 (69.2%)

16 (69.6%)

Smoking

Yes

109 (4.2%)

8 (4.7%)

1 (4.3%)

0.13

0.93

No

2512 (95.8%)

161 (95.3%)

22 (95.7%)

Gravidity

Primigravida

1437 (54.8%)

109 (64.5%)

18 (78.3%)

10.8

0.004^*

Multigravida

1184 (45.2%)

60 (35.5%)

5 (21.7%)