Variable

HbSC

HbSS

HbAA

SS versus SC

SS versus AA

SC versus AA

χ²

P-value

χ²

P-value

χ²

P-value

Total pregnancies (n)

66

98

160

Gestational hypertension

Pregnancy-induced hypertension

9

10

6

0.45

0.50

4.35

0.04

7.37

0.007

Pre-eclampsia

14

20

10

0.02

0.89

11.86

0.0005

11.02

0.001

Eclampsia

0

1

0

-

-

-

-

-

-

Haemorrhage

Antepartum

3

3

2

0.25

0.62

1.05

0.31

2.35

0.13

Postpartum

5

7

6

0.01

0.92

1.46

0.23

1.48

0.22

Gestational diabetes

0

3

2

2.06

0.15

1.05

0.31

0.83

0.36

Retained placenta

0

1

0

-

-

-

-

-

-

Uneventful pregnancies

41

34

144

11.95

0.0005

86.89

<0.0001

22.61

<0.0001

Sickle cell-related complications

Painful crises

10

29

0

4.54

0.03

Acute chest syndrome

6

12

0

0.40

0.53

Urinary tract infection

12

14

0

0.45

0.50

Maternal death

0

0

0