Open AccessFirst‐ and second‐trimester hemoglobin levels
Author(s) -
Rasmussen Svein,
Øian Pal
Publication year - 1993
Publication title -
acta obstetricia et gynecologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.401
H-Index - 102
eISSN - 1600-0412
pISSN - 0001-6349
DOI - 10.3109/00016349309068032
Subject(s) - medicine , gestational age , hemoglobin , obstetrics , birth weight , pregnancy , stepwise regression , second trimester , gestation , first trimester , biology , genetics
The computerized records of 3074 women who were delivered during the period 1987–1990 were analysed. We studied possible relations of birth weight and gestational age to maternal first‐ and second‐trimester hemoglobin levels. Birth weight and gestational age were taken as outcome variables in a multiple stepwise regression analysis, including factors that might interact with hemoglobin levels. A strong independent inverse correlation between the lowest second‐trimester hemoglobin and birth weight was observed. First‐trimester hemoglobin levels explained little with regard to birth weight, but had a small negative correlation to gestational age. For gestational age > 259 days we found a strong positive correlation between the first‐ to second‐trimester decrease in hemoglobin and birth weight.