Journal
PEDIATRICS
Volume 118, Issue 5, Pages 1819-1827Publisher
AMER ACAD PEDIATRICS
DOI: 10.1542/peds.2006-0735
Keywords
in vitro fertilization; perinatal health; morbidity; multiplicity; registry-based study
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OBJECTIVE. The purpose of this study was to use nationwide registries to examine the health of children up to 4 years of age who were born as a result of in vitro fertilization. METHODS. Children born after in vitro fertilization (N = 4559) from 1996 to 1999 were monitored until 2003. Two control groups were selected from the Finnish Medical Birth Register as follows: all other children ( excluding children born after ovulation induction) from the same period ( N = 190 398, for study of perinatal health and hospitalizations) and a random sample of those children ( n = 26 877, for study of health-related benefits). Mortality rates and odds ratios for perinatal outcomes, hospitalizations, health-related benefits, and long-term medication use were calculated. ' RESULTS. Although the health of most in vitro fertilization children was good, such children had more health problems than other children. A total of 35.7% of in vitro fertilization children and 2.2% of control children were multiple births, and the health of multiple births was worse than that of singletons. Perinatal outcomes of in vitro fertilization children were worse and hospital episodes were more common than among control children. Risks for cerebral palsy and psychological and developmental disorders were increased. Among in vitro fertilization singletons, worse results for perinatal outcomes and hospitalizations, but no increased risk for specific diseases, were found. The health of in vitro fertilization multiple births was comparable to the health of control multiple births. CONCLUSIONS. Reducing the number of transferred embryos would improve the health of in vitro fertilization children. Additional studies are needed to explain the poorer health of in vitro fertilization singletons, as well as follow-up studies to examine the health of in vitro fertilization children from 4 years onward.
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