What can we learn about the limits of human pregnancy from studying higher-order multiples?

Dec 25, 1986 ... This was a significantly higher proportion (chi-square = 6.11; P<0.025) than that of dizygotic twin pairs (14 of 43; 32.6 percent) recog- nized ... Association of low birth weight with cardiometabolic diseases in Swedish twins: a population-based cohort study ... proportion (AP) and the Synergy Index (S). Oct 12, 2009 ... While they represent just 2 percent of the general population, twins make up 7.4 percent of the nation's cerebral palsy sufferers. Twins ... Nov 24, 2024 ... The rate of stillbirth is high and is estimated to be around 60 per cent. ... Population Fund (UNFPA) in support of reproductive, adolescent and ... Oct 15, 2011 ... The number is on the rise, however, as a consequence of the rising percentage of so-called mixed race people in the British population. Conjoined twins occur once in every 50,000 to 60,000 births. Approximately 70 percent of conjoined twins are female, and most are stillborn. Approximately 75 ... Nov 13, 2022 ... To study the risk of spontaneous preterm birth in twin pregnancies compared with singleton pregnancies. Design. Population-based registry study. ... what percentage of their cause is due to genes. To do this we find people with the disease who have a twin, and then find out whether the twin is also ill. People of other races exhibited lower educational attainment than their white counterparts, with a much higher percentage of people with less than a high ... Apr 17, 2014 ... The rate surpassed 3 percent in 2001 and hit 3.3 percent in 2010. Now, one out of every 30 babies born is a twin. That's a lot of "extra ...