What are the ethical considerations in twin research?

Nov 13, 2022 ... To study the risk of spontaneous preterm birth in twin pregnancies compared with singleton pregnancies. Design. Population-based registry study. Feb 2, 2018 ... 5 discoveries we can thank twins for ... In some regions of the world, red heads are more common, making up 10-30 per cent of the population in ... Mar 15, 2023 ... Fraternal twins happen because some people release two eggs (or more) at a time. That's called superovulation. Advertisement. If two sperm ... Dec 11, 2015 ... The share of multiples born in the U.S. is at an all-time high. In 2014, 3.5% of all babies born were twins, triplets or higher-order ... However, OCP mainly focused on the Han ethnicity, the largest ethnic group in China, with more than 90 percent of the population. In addition to the timing of ... Aug 18, 2016 ... The twin boom. The proportion of twins in the population has waxed and waned in human history. For the first time we understand why. by Laura ... ... proportion of provided data. Analysis. We defined the outcome in our analyses ... We based our analyses on data from a population-based twin sample of ... Jan 5, 2016 ... ... population's cancer risk is due to genetic factors. “Findings ... percent of the identical twins and 26 percent of the fraternal twins. Mar 11, 2021 ... One in every 42 children is born a twin and much has changed over the past 30 years, a report finds. 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 ...