Table 3 Adjusted risk factors for antepartum stillbirth by parity in New South Wales Australia 2002 – 2006
Nulliparous women Ante SB Births | AHR | 95% confidence interval | Multiparous women Ante SB Births | Adj HR | 95% confidence interval | |||
|---|---|---|---|---|---|---|---|---|
Indigenous | ||||||||
Aboriginal or Torres Strait Islander | 15 | 3586 | 0.97 | 0.57, 1.67 | 20 | 4535 | 1.19 | 0.74, 1.90 |
Not ATSI | 610 | 169631 | Ref | 482 | 149938 | Ref | ||
Maternal age (years) | ||||||||
< 20 | 63 | 14002 | 1.23 | 0.90, 1.68 | 3 | 1219 | 0.77 | 0.24, 2.47 |
20 -24 | 117 | 33401 | Ref | 44 | 14901 | Ref | ||
25-29 | 178 | 53542 | 1.07 | 0.84, 1.35 | 126 | 38461 | 1.22 | 0.86, 1.72 |
30-34 | 167 | 50180 | 1.16 | 0.90, 1.48 | 176 | 57550 | 1.26 | 0.90, 1.76 |
35-39 | 75 | 18510 | 1.45 | 1.08, 1.96 | 109 | 34238 | 1.36 | 0.95, 1.94 |
≥ 40 | 25 | 3582 | 2.58 | 1.67, 4.01 | 44 | 8104 | 2.32 | 1.52, 3.56 |
Preexisting diabetes | ||||||||
No | 616 | 172342 | Ref | 494 | 153459 | Ref | ||
Yes | 9 | 875 | 3.06 | 1.57, 5.97 | 8 | 1014 | 2.20 | 1.08, 4.50 |
Preexisting hypertension | ||||||||
No | 611 | 171422 | Ref | 484 | 152772 | Ref | ||
Yes | 14 | 1795 | 2.25 | 1.31, 3.85 | 18 | 1701 | 3.38 | 2.09, 5.49 |
Smoking during pregnancy | ||||||||
No | 511 | 152057 | Ref | 366 | 127134 | Ref | ||
Yes | 114 | 21160 | 1.71 | 1.37, 2.13 | 136 | 27339 | 1.93 | 1.56, 2.38 |
Baby gender | ||||||||
Female | 287 | 83575 | Ref | 260 | 74873 | Ref | ||
Male | 338 | 89642 | 1.11 | 0.95, 1.30 | 242 | 79600 | 0.88 | 0.74, 1.05 |
Gestational diabetes | ||||||||
No | 607 | 166321 | Ref | 481 | 146154 | Ref | ||
Yes | 18 | 6896 | 0.66 | 0.41, 1.06 | 21 | 8319 | 0.65 | 0.42, 1.02 |
Pre-eclampsia | ||||||||
No | 578 | 160272 | Ref | 479 | 148236 | Ref | ||
Yes | 47 | 12945 | 1.10 | 0.82, 1.49 | 23 | 6237 | 1.15 | 0.76, 1.76 |
Area health service of residence | ||||||||
Sydney South West AHS | 151 | 39377 | 1.13 | 0.88, 1.45 | 140 | 34745 | 1.39 | 1.02, 1.88 |
South Eastern Sydney & Illawarra AHS | 106 | 31893 | Ref | 63 | 23056 | Ref | ||
Sydney West AHS | 135 | 32100 | 1.19 | 0.92, 1.54 | 104 | 30404 | 1.16 | 0.84, 1.59 |
Northern Sydney & Central Coast AHS | 78 | 28913 | 0.80 | 0.60, 1.07 | 49 | 22427 | 0.83 | 0.57, 1.20 |
Hunter & New England AHS | 77 | 18615 | 1.19 | 0.88, 1.61 | 62 | 19014 | 1.14 | 0.80, 1.63 |
North Coast AHS | 30 | 8621 | 0.98 | 0.65, 1.48 | 28 | 9573 | 1.00 | 0.64, 1.57 |
Greater Southern AHS | 21 | 7024 | 0.85 | 0.53, 1.37 | 22 | 7792 | 0.97 | 0.60, 1.59 |
Greater Western AHS | 27 | 6674 | 1.14 | 0.74, 1.75 | 34 | 7462 | 1.56 | 1.02, 2.39 |
Mother’s Country of birth | ||||||||
English speaking | 483 | 136476 | Ref | 364 | 119126 | Ref | ||
Central and South America | 4 | 1556 | 0.77 | 0.29, 2.07 | 4 | 1306 | 1.07 | 0.40, 2.89 |
Eastern Europe, Russia, Central Asian and Baltic States | 5 | 1343 | 1.15 | 0.48, 2.78 | 7 | 793 | 3.27 | 1.54, 6.94 |
Melanesia, Micronesia and Polynesia | 11 | 2320 | 1.42 | 0.78, 2.59 | 21 | 3481 | 1.92 | 1.22, 3.01 |
Middle East and Africa | 33 | 6049 | 1.60 | 1.11, 2.29 | 49 | 8719 | 1.86 | 1.35, 2.55 |
North East Asia | 19 | 7338 | 0.81 | 0.51, 1.29 | 8 | 5299 | 0.57 | 0.28, 1.15 |
South East Asia | 32 | 9898 | 1.03 | 0.71, 1.49 | 26 | 8694 | 1.08 | 0.71, 1.63 |
Southern Asia | 30 | 4843 | 2.00 | 1.37, 2.93 | 14 | 3959 | 1.36 | 0.79, 2.35 |
Southern, Western and Northern Europe | 8 | 3394 | 0.68 | 0.34, 1.37 | 9 | 3096 | 0.96 | 0.49, 1.87 |
Previous birth by CS | ||||||||
No | 402 | 125257 | Ref | |||||
Yes | 100 | 29216 | 1.24 | 0.99, 1.55 | ||||