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Validity of a selection of pregnancy complications in the Medical Birth Registry of Norway.

Fredrikke N MothTharani R SebastianJulie HornJanet W Rich-EdwardsPål Richard RomundstadBjørn Olav Åsvold
Published in: Acta obstetricia et gynecologica Scandinavica (2016)
The validity of information on gestational age and birthweight in the MBRN was very good. For medically initiated delivery, the validity was poor before 1985 and satisfactory thereafter. For gestational hypertension, lack of information in hospital records made the evaluation difficult, but our results suggest that most women labeled with gestational hypertension in the MBRN did have a hypertensive disorder of pregnancy.
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