Table 1

Background and follow-up data for the pre-eclampsia group and the control group without history of pre-eclampsia

Pre-eclampsia groupControl group
n%n%
31 68810091 726100
Age at index day (years)14–2014904.642 3824.6
20–24766024.222 02024.0
25–2910 88834.431 68934.6
30–34702022.220 39922.2
35–39356411.210 25011.2
40–5010943.531303.4
Mean (SD)28.6 (5.70)NA28.6
(5.67)
NA
Median (IQR)27.9
(24.4–32.3)
NA28.0
(24.5–32.3)
NA
CountySouthern13 34242.139 03742.6
Western899828.425 83728.2
Eastern489315.414 14015.4
Northern445514.112 71213.9
Age at the end of follow-up (years)<5021296.758146.3
50–5911 07434.931 49634.3
60–6912 72840.237 05940.4
70–79518916.415 50116.9
≥ 805681.818562.0
Mean (SD)62.0
(8.71)
NA62.2
(8.92)
NA
Median (IQR)61.8
(56.3–68.0)
NA62.1
(56.5–68.2)
NA
Duration of follow-up (years)Mean (SD)33.4
(7.69)
NA33.6
(7.84)
NA
Median (IQR)32.7
(27.8–38.9)
NA32.8
(28.9–39.0)
NA
Type of pre-eclampsiaWithout severe features25 81481.5NANA
With severe features486715.4NANA
Eclampsia10073.2NANA
  • IQR, interquartile range (25th and 75th percentile); NA, not available.