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Table 2 Crude and adjusted risk factors for antepartum stillbirth in New South Wales Australia 2002 – 2006

From: Risk factors for antepartum stillbirth and the influence of maternal age in New South Wales Australia: A population based study

  

Antepartum still births (ante=1)

Births

Univariable hazard ratio

95% confidence interval

Multivariable hazard ratio

95% confidence interval

Indigenous

       
 

Aboriginal or Torres Strait Islander

35

8121

1.31

0.94, 1.84

1.09

0.77, 1.55

 

Not ATSI

1092

319569

    

Maternal age (years)

       
 

< 20

66

15221

1.31

0.98, 1.74

1.18

0.88, 1.57

 

20 -24

161

48302

Referent

Referent

  
 

25-29

304

92003

1.00

0.83, 1.21

1.14

0.94, 1.34

 

30-34

343

107730

0.98

0.81, 1.18

1.21

1.00, 1.47

 

35-39

184

52748

1.09

0.88, 1.35

1.40

1.12, 1.75

 

≥ 40

69

11686

1.90

1.43, 2.52

2.41

1.80, 3.23

Parity

       
 

Multiparous

502

154473

Referent

   
 

Nulliparous

625

173217

1.07

0.96, 1.21

1.23

1.08, 1.40

Preexisting diabetes

       
 

No

1110

325801

Referent

   
 

Yes

17

1889

3.11

1.93, 5.03

2.65

1.63, 4.32

Preexisting hypertension

       
 

No

1095

324194

Referent

   
 

Yes

32

3496

3.03

2.13, 4.31

2.77

1.94, 3.97

Smoking during pregnancy

       
 

No

877

279191

Referent

   
 

Yes

250

48499

1.68

1.46, 1.93

1.82

1.56, 2.12

Baby gender

       
 

Female

547

158448

Referent

   
 

Male

580

169242

1.00

0.89, 1.12

1.00

0.89, 1.12

Gestational diabetes

       
 

No

1088

312475

Referent

   
 

Yes

39

15215

0.80

0.58, 1.10

0.65

0.47, 0.91

Pre-eclampsia

       
 

No

1057

308508

Referent

   
 

Yes

70

19182

1.18

0.93, 1.50

1.13

0.88, 1.44

Area health service of residence

       
 

Sydney South West AHS

291

74122

1.26

1.05, 1.53

1.23

1.01, 1.49

 

South Eastern Sydney & Illawarra AHS

169

54949

Referent

   
 

Sydney West AHS

239

62504

1.23

1.01, 1.50

1.17

0.96, 1.43

 

Northern Sydney & Central Coast AHS

127

51340

0.80

0.64, 1.01

0.81

0.65, 1.02

 

Hunter & New England AHS

139

37629

1.19

0.95, 1.49

1.16

0.92, 1.46

 

North Coast AHS

58

18194

1.02

0.76, 1.38

0.99

0.73, 1.34

 

Greater Southern AHS

43

14816

0.93

0.67, 1.30

0.90

0.65, 1.37

 

Greater Western AHS

61

14136

1.40

1.04, 1.87

1.33

0.99,1.80

Mother’s Country of birth

       
 

English speaking

847

255602

Referent

   
 

Central and South America

8

2862

0.85

0.42, 1.71

0.90

0.45, 1.81

 

Eastern Europe, Russia, Central Asian and Baltic States

12

2136

1.68

0.95, 2.97

1.84

1.04, 3.25

 

Melanesia, Micronesia and Polynesia

32

5801

1.67

1.17, 2.38

1.70

1.19, 2.44

 

Middle East and Africa

82

14768

1.64

1.31, 2.06

1.74

1.38, 2.21

 

North East Asia

27

12637

0.65

1.44, 0.96

0.72

0.49, 1.06

 

South East Asia

58

18592

0.98

0.75, 1.28

1.05

0.80, 1.38

 

Southern Asia

44

8802

1.53

1.13, 2.07

1.75

1.28, 2.39

 

Southern Europe

14

3836

1.10

0.65, 1.87

1.10

0.65, 1.87

 

Western and Northern Europe

3

2654

0.34

0.11, 1.04

0.35

0.11, 1.10