Skip to main content

Table 5 The risk of preterm preeclampsia and preterm births of small-for-gestational-age infants (SGA) by changes in diastolic blood pressure from early to mid-gestation

From: Elevated diastolic blood pressure until mid-gestation is associated with preeclampsia and small-for-gestational-age birth: a population-based register study

cBP changes until mid-gestation Preterm preeclampsia (<  37 weeks)
n % Crude OR (95% CI)d Adjustede OR (95% CI)
Diastolic BPc
 Lowereda 46,466 0.6 1.0 1.0
 Elevatedb 18,009 0.9 1.6 (1.3–1.9) 2.2 (1.8–2.8)
  Preterm SGA (<  37 weeks)
n % Crude OR (95% CI)d Adjustede OR (95% CI)
Diastolic BPc
 Lowereda 46,410 0.5 1.0 1.0
 Elevatedb 17,980 0.8 1.7 (1.4–2.1) 2.3 (1.8–3.0)
  1. cBP: Blood pressure. The changes in systolic and diastolic BP were categorized in the following groups; a) lowered BP, defined as no change or decrease by 1 mmHg or more and b) elevated BP, defined as an increase by 1 mmHg or more between early to mid-gestation. SGA defined as birth weight of more than two standard deviations below the mean weight for gestational age. dOR (95% CI): Odds ratios with 95% confidence intervals. eAdjusted for mean arterial blood pressure in early gestation, maternal body mass index, smoking, age, recurrent miscarriages before the index pregnancy and country of birth