Table 2

Maternal blood pressure levels at four time points during pregnancy by maternal blood pressure at 11–14 weeks in the NORA cohort

VariablesNormal BP (n=750)Elevated BP (n=98)Hypertension (stage 1 and stage 2) (n=75)P value
SBP (mm Hg), mean±SD
 11–14 weeks104.9±8.3123.2±2.6126.8±11.1<0.001
 18–22 weeks105.9±10.1118.6±9.9124.0±10.5<0.001
 28–32 weeks108.2±10.0118.1±9.7123.8±11.4<0.001
 ≥34 weeks110.5±10.7119.5±10.6126.1±15.5<0.001
DBP (mm Hg), mean±SD
 11–14 weeks63.6±6.871.4±4.480.8±7.0<0.001
 18–22 weeks62.9±7.069.0±7.276.3±8.1<0.001
 28–32 weeks64.0±6.969.8±6.676.6±9.0<0.001
 ≥34 weeks67.4±7.873.3±7.380.0±11.4<0.001
MAP (mm Hg), mean±SD
 11–14 weeks77.3±6.588.7±3.296.1±6.5<0.001
 18–22 weeks77.2±7.285.5±7.392.2±8.2<0.001
 28–32 weeks78.8±7.185.9±6.392.4±9.1<0.001
 ≥34 weeks81.8±8.188.7±7.695.4±11.9<0.001
  • BP, blood pressure; DBP, diastolic blood pressure; MAP, mean arterial pressure; SBP, systolic blood pressure.