Editing Multiple birth (section)

===Mortality rate (stillbirth)===
Multiples are also known to have a higher mortality rate.  It is more common for multiple births to be stillborn, while for singletons the risk is not as high.  A literary review on multiple pregnancies shows a study done on one set each of septuplets and octuplets, two sets of sextuplets, 8 sets of quintuplets, 17 sets of quadruplets, and 228 sets of triplets.  By doing this study, Hammond found that the mean gestational age (how many weeks when birthed) at birth was 33.4 weeks for triplets and 31 weeks for quadruplets. This shows that stillbirth happens usually 3–5 weeks before the woman reaches full term and also that for sextuplets or higher it almost always ends in death of the fetuses.<ref>{{Cite journal |last=Hammond KR |year=1998 |title=Multifetal pregnancy reduction |journal=J Obstet Gynecol Neonatal Nurs |volume=27 |issue=3 |pages=338–43 |doi=10.1111/j.1552-6909.1998.tb02657.x |pmid=9620827}}</ref>
Though multiples are at a greater risk of being stillborn, there is inconclusive evidence whether the actual mortality rate is higher in multiples than in singletons.