We know that Asian families have fewer multiple births than white European families.
Whites have fewer multiple births than families of African ancestry.
No one really knows how the differences happen. The old stories make some sense but have never been proven. We know very little about multiple births in the Hispanic peoples of Central and South America. We want to know more about having multiple births and being part of multiples among all kinds of families. Before you attempt to answer our survey, there are some things you should know.