Pregnancy Outcome Statistics
Triple to twins reduction has statistically shown better pregnancy outcome with premature birth before 32 weeks reduced to 10.1% from 20.3% and miscarriage before 24 weeks reduced to 5.6% from 11.5%.
Reduction of triplets to a singleton has a higher loss rate (7 versus 4.5%) but lower morbidity, yet both resultant twins or singletons are much less risky than attempting to carry the triplets (15%).
Reduction from twins to singleton remains controversial. The 2010 retrospective case-control study found that twins to singleton reduction produced no statistically significant improvement in pregnancy outcome in terms of total pregnancy complications, preterm deliveries or birth weight. The pioneer of the procedure Mark Evans initially discouraged twins to singleton reduction, however he endorsed it in 2004 paper citing lower risk of total pregnancy loss after procedure (1.9%) compared to spontaneous loss (8-10%).
Read more about this topic: Selective Reduction
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