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[Higher order multiple births in Iceland 1982-1998.]
Multiple births, including higher-order multiples, have significantly increased in Iceland over 17 years, particularly after the advent of successful in vitro fertilization (IVF) treatments. This trend highlights the impact of assisted reproductive technologies on pregnancy outcomes.
Area of Science:
- Reproductive Medicine
- Perinatology
- Public Health
Context:
- Rising incidence of multiple births globally due to infertility treatments.
- Need to understand trends in specific populations like Iceland.
- Icelandic Birth Registry data provides a valuable resource for epidemiological studies.
Purpose:
- To investigate the incidence of higher order multiple pregnancies in Iceland from 1982-1998.
- To analyze trends in twin and higher order multiple births.
- To assess the impact of in vitro fertilization (IVF) on these trends.
Summary:
- A total of 73,164 births were analyzed, revealing an increase in both twin and higher order multiple births.
- Incidence of twins rose from 1:103 to 1:55, while higher order multiples increased from 1:6127 to 1:1116.
- The rise in higher order multiples was more pronounced than for twins, coinciding with advancements in IVF technology.
Impact:
- Demonstrates a significant increase in multiple births in Iceland over 17 years.
- Highlights the substantial impact of IVF on the incidence of higher order multiples.
- Provides data on perinatal mortality, gestational age, and birth weight for higher order multiples, indicating potential risks.
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