Table 2 Factors associated with stillbirths

Maternal age group (years)^a

P = 0.05; P trend = 0.02

P = 0.41; P trend = 0.19

12-19

41 (4.9)

0.84 (0.61, 1.16)

0.79 (0.55, 1.12)

20-35

400 (5.8)

1

1

36-50

75 (7.5)

1.29 (1.01, 1.65)

1.03 (0.76, 1.39)

Occupation^b

P = 0.02

P = 0.07

Skilled

29 (3.5)

1

1

Semi-skilled

374 (6.1)

1.71 (1.17, 2.49)

1.56 (1.06, 2.30)

Unemployed

89 (5.8)

1.61 (1.06, 2.45)

1.59 (1.05, 2.43)

Parity^c

P = 0.002; P trend = 0.06

P = 0.04; P trend = 0.23

0

178 (5.8)

1.03 (0.86, 1.25)

1.02 (0.83, 1.26)

1-4

277 (5.6)

1

1

5+

52 (9.7)

1.71 (1.27, 2.30)

1.56 (1.11, 2.18)

Type of delivery

P < 0.001

P < 0.001

Spontaneous vaginal delivery

433 (5.2)

1

1

Breech delivery

72 (24.3)

4.69 (3.65, 6.02)

2.70 (2.04, 3.57)

Vacuum extraction

12 (11.3)

2.18 (1.23, 3.87)

2.67 (1.50, 4.76)

Number of singleton/multiple births

P = 0.56

Singleton

502 (5.9)

1

-

Multiple

15 (5.1)

0.86 (0.51, 1.44)

-

Hypertensive disorder in pregnancy

P < 0.001

P < 0.001

No

453 (5.5)

1

1

Yes

64 (14.1)

2.58 (1.98, 3.35)

1.77 (1.32, 2.36)

Sex of baby^d

P = 0.14

-

Female

232 (5.5)

1

-

Male

283 (6.3)

1.14 (0.96, 1.36)

-

Gestation at delivery^e

P < 0.001

P < 0.001

Term

359 (4.4)

1

1

Preterm

157 (26.9)

6.13 (5.08, 7.39)

5.15 (4.18, 6.35)