03 December 2019

NPE Rates

A recently published study of extra-pair paternity (EPP), often called NPEs, in the Netherlands and Belgium shows that historical rates were low overall (∼1%) but higher for urban populations than rural and for those with low socioeconomic status. Combining the two the rate was ∼5.9% among urban families with low socioeconomic status.
That means for the 15 couplings back to your great-great-grandparents there would be a 14% chance of at least one NPE at the overall average 1%, but a 60% chance for urban families with low socioeconomic status.
The table shows the probability a person has one or more NPEs, cumulatively back for a specified number of generations, starting with parents at one generation.

GenerationsCouplings1% NPE Rate2% NPE Rate6% NPE Rate
11126
233617
3771335
415142660
531274785
663477298
71277292100
82559299100
951199100100
101023100100100

1 comment:

Anonymous said...

INTERESTING. I will never forget an employee in my government department explaining to me that his wife had told me him one weekend during a fight they were having, that three of their four daughters were not his. Cheers anyway, BT