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. 2017 Mar 6;6(3):e004158. doi: 10.1161/JAHA.116.004158

Table 1.

Characteristics of 506 350 Norwegian Women With 1 to 5 Singleton Deliveries and a First Delivery During 1980–2002, by Parity and Presence of Preeclampsia

Characteristics of the Study Participants One Lifetime Pregnancy More than 1 Lifetime Pregnancy
Without Preeclampsia (n=86 180) With Preeclampsia (n=4385) Without Preeclampsia (n=390 253) With Preeclampsiaa (n=25 532)
Age at first birth, mean (SD), y 27.5 (5.7) 28.1 (5.6) 25.1 (4.2) 25.0 (4.2)
Education level, No. (%)b
Basic education 30 727 (35.7) 1661 (37.9) 113 396 (29.1) 7531 (29.5)
Secondary education 24 162 (28.0) 1329 (30.3) 118 591 (30.4) 7998 (31.3)
Tertiary education 28 747 (33.4) 1333 (30.4) 155 756 (39.9) 9877 (38.7)
Marital status at first birth, No. (%)c
Married/cohabitant 62 303 (72.3) 3419 (78.0) 325 468 (83.4) 64 785 (16.6)
Other 23 877 (27.7) 966 (22.0) 21 525 (84.3) 4007 (15.7)
Diabetes mellitus, No. (%)d 401 (0.5) 117 (2.7) 944 (0.2) 265 (1.0)
Preterm delivery, No. (%)e 5292 (6.1) 1080 (24.6) 35 714 (9.2) 6485 (25.4)
Small for gestational age, No. (%)f 11 487 (13.3) 1221 (27.8) 65 691 (16.8) 7631 (29.9)
Study end points, No. (%)
Major coronary event 352 (0.4) 55 (1.3) 743 (0.2) 125 (0.5)
Cardiovascular deaths 171 (0.2) 21 (0.5) 256 (0.1) 20 (0.1)
All deaths 2034 (2.4) 109 (2.5) 3065 (0.8) 203 (0.6)
Follow‐up time until major coronary event, median (IQR), y 17.2 (11.3) 15.9 (11.7) 18.5 (10.8) 17.8 (11.0)
Follow‐up time until cardiovascular death, median (IQR), y 17.2 (11.3) 15.7 (11.6) 18.5 (10.8) 17.8 (11.0)

IQR indicates interquartile range.

a

In at least 1 of the pregnancies.

b

Information on education was not available in 5242 (1.04%) of women .

c

Information on cohabitant only available from 1982.

d

Diabetes mellitus diagnosed before the first pregnancy.

e

Less than 37 weeks of gestation.

f

Lower than the 10th percentile.