Table 1

Characteristics of cohort by hypertensive disorder of pregnancy at first birth

CharacteristicHypertensive disorder of pregnancy
Total
N=528 106
No
n=473 783
Yes
n=54 323
n%n%n%
Maternal characteristics
 Age (years)
  <2035 2506.731 7506.73 5006.4
 20–2494 32217.984 04117.710 28118.9
 25–29164 20331.1148 02231.216 18129.8
 30–34157 94029.9142 60230.115 33828.2
 35–3963 08411.955 93211.87 15213.2
 40–4412 5202.410 7862.31 7343.2
 45+7870.16500.11370.3
Country of birth: Australia
345 13865.4304 67864.340 46074.5
Aboriginality
15 6573.013 6982.91 9593.6
SEIFA
 1 (most disadvantaged)84 04515.975 86616.08 17915.1
 278 75414.970 03614.88 71816.0
 3115 22621.8102 68021.712 54623.1
 4113 55021.5101 85521.511 69521.5
 5 (least disadvantaged)136 53125.9123 34626.013 18524.3
Pregnancy characteristics
 Smoked
48 9439.344 5279.44 4168.1
 Diabetes
40 7647.735 7267.55 0389.3
 Small for gestational age
67 56512.858 98512.48 58015.8
 Preterm birth
33 4466.326 2935.57 15313.2
  • P values based on a χ2 test of difference between presence/absence of hypertensive disorder of pregnancy within each maternal characteristics group, all p<0.001.

  • SEIFA, Socio-Economic Indexes for Areas.