Variables

Cases

N = 152

n (%)

Controls

N = 456

n (%)

OR (CI 95%)

p-value

ANC follow-up (Number of ANC)

None

15 (9.87)

27 (05.92)

0.95 (0.70 - 1.30)

0.85

Between 1 and 4

100 (65.79)

327 (71.71)

1.06 (0.51 - 3.94)

<0.01

Greater than 4

37 (24.34)

116 (25.43)

1.051 (0.74 - 1.47)

0.83

Gestational age (Weeks)

28 - 36

20 (13.16)

96 (21.05)

4.5 (1.61 - 7.16)

0.02

37 - 42

127 (83.55)

303 (66.44)

1.68 (0.14 - 5.65)

0.13

Greater than 42

5 (3.29)

71 (15.57)

8.28 (5.3 - 8.51)

0.42

Augmentation of labour Yes

67 (44.08)

126 (27.63)

0.46 (0.31 - 0.67)

<0.01

Induction of labour Yes

02 (1.32)

11 (02.41)

0.59 (0.16 - 2.18)

0.62

Instrumental extraction Yes

3 (1.97)

9 (01.97)

1.03 (0.27 - 3.85)

0.46

Duration of labour (hours)

≤12

140 (86.85)

264 (57.89)

0.25 (1.05 - 1.45)

0.12

>12

12 (7.89)

206 (45.17)

3.11 (2.06 - 6.43)

0.02