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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