“twins” Charts
Twin Birth Rates Among Different Ethnicity in the U.S. »
The twin birth rate among non-Hispanic white women has more than doubled since 1980. Look at the following graph to…
Twin Birth Rates in the U.S. »
According to the National Center for Health Statistics, the older maternal age distribution explains some of the increase in the…
A Shorter Pregnancy Period for Mothers of Twins »
The average duration of pregnancy decreases as the plurality of births increases. The average gestational period for singletons was 38.7…
