You must log in or # to comment.
To avoid bias from parents who stopped having children after reaching a preferred sex ratio, the researchers did not count each woman’s final birth in the analysis.
Uhhhh, I’m no statistician, but doesn’t that introduce a bias into the statistics? It means that you (potentially, depending on behaviour) have fewer examples of balanced-sex families.
Yeah, I can see the bias they are trying to account for, but fail to see how excluding a birth from the statistics helps combat this in any way. Just because you stopped having kids doesn’t have any effect on the gender of your last kid.