Table 1.

Preeclampsia and preeclampsia subtype criteria

Phenotype	Criteria	Case Pregnancies
Preeclampsiaa	New onset systolic blood pressure ≥ 140 mm Hg or diastolic blood pressure of ≥ 90 mm Hg AND Proteinuria ≥ 0.3 g/24-hr or ≥1+ on urine dipstick	1,545
Preeclampsia Subtypes
Severe preeclampsiaa	General requirements of preeclampsia plus Systolic blood pressure of ≥ 160 mm Hg or diastolic blood pressure of ≥ 110 mm Hg OR Proteinuria ≥ 5g/24-hr or ≥3+ on urine dipstick	308
Early-onset preeclampsia	General requirements of preeclampsia plus Diagnosis prior to 34 completed weeks of gestation	277
Preeclampsia with early delivery	General requirements of preeclampsia plus Delivery prior to 34 completed weeks of gestation	132
Preeclampsia with small-for-gestational-age	General requirements of preeclampsia plus Infant born <10th percentile weight for gestational ageb	349

^aCases with a validated diagnosis of eclampsia in the Medical Birth Registry of Norway were included in the preeclampsia and severe preeclampsia phenotypes.

^bPopulation percentiles derived from Norwegian distribution, eSnurra Norway