The frequency of misattributed paternity in Sweden is low and decreasing: A nationwide cohort study
Journal of internal medicine, 2022•Wiley Online Library
Background The occurrence of misattributed paternity has consequences throughout society
with implications ranging from inheritance and royal succession to transplantation. However,
its frequency in Sweden is unknown. Objective To estimate the contemporary frequency of
misattributed paternity in Sweden. Methods The study was based on nationwide ABO blood
group data and a nationwide register of familial relationships in Sweden. These data were
analysed using both a frequentist Poisson model and the Bayesian Gibbs model. The …
with implications ranging from inheritance and royal succession to transplantation. However,
its frequency in Sweden is unknown. Objective To estimate the contemporary frequency of
misattributed paternity in Sweden. Methods The study was based on nationwide ABO blood
group data and a nationwide register of familial relationships in Sweden. These data were
analysed using both a frequentist Poisson model and the Bayesian Gibbs model. The …
Background
The occurrence of misattributed paternity has consequences throughout society with implications ranging from inheritance and royal succession to transplantation. However, its frequency in Sweden is unknown.
Objective
To estimate the contemporary frequency of misattributed paternity in Sweden.
Methods
The study was based on nationwide ABO blood group data and a nationwide register of familial relationships in Sweden. These data were analysed using both a frequentist Poisson model and the Bayesian Gibbs model. The conduct of the study was approved by the regional ethics committee in Stockholm, Sweden (reference numbers 2018/167‐31 and 2019‐04656).
Results
Nearly two million mother‐father‐offspring family units were included. Overall, the frequency of misattributed paternity was estimated at 1.7% in both models. Misattributed paternity was more common among parents with low educational levels, and has decreased over time to a current 1%.
Conclusions
The misattributed paternity rate is similar to the rates in other West European populations. Apart from widespread societal implications, studies on heritability may consider misattributed paternity as a minor source of error.
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