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Table 2 Background information about women aged under 35 and 35 and over who had preeclampsia

From: Preeclampsia complicated by advanced maternal age: a registry-based study on primiparous women in Finland 1997–2008

  Women <35 Women ≥35  
  (n = 15 437) (n = 2387) P
Prior termination 3237 (21.0) 812 (34.0) <0.001
Pregravid BMI >25 kg/m2 2201 (41.6) 470 (56.2) <0.001
Late pregnancy bleeding 215 (1.4) 45 (1.9) 0.062
Placenta previa 29 (0.2) 11 (0.5) 0.009
Fertility treatment other than IVF 274 (1.8) 154 (6.5) <0.001
IVF 291 (1.9) 184 (7.7) <0.001
Anemia 91 (0.6) 14 (0.6) 0.986
Smoking 2196 (14.2) 226 (9.5) <0.001
Not married 7346 (47.6) 1128 (47.3) 0.058
Chronic hypertension 177 (1.1) 49 (2.1) <0.001
Maternal diabetes 753 (4.9) 221 (9.3) <0.001