In case of a selection bias associated with failure to answer, this would have a minimal influence on the validity of results, because, initially, there are no reasons to believe that the women who answered are substantially different from those who did not.
De existir un sesgo de selección asociado a la no respuesta, este habrá tenido una influencia mínima sobre la validez de los resultados pues no existen a priori razones para pensar que las mujeres que respondieron difieran sustancialmente de las que no respondieron.