They cannot see it because they cannot or will not ask the right questions. This is the heart of the problem. That the vast majority of those who died by Kevorkian's hand were women has been reported since the beginning. But none of the researchers seems to have a viable theory about the gender disparity in completed suicides. Few of those studying the problem have any real explanations.
Oppression takes two major forms, external and internal.
A woman can be a soldier but cannot serve in combat, which provides the greatest opportunity for advancement. She can have a career in the military but is not allowed to achieve the success of male counterparts. In other endeavors, the glass ceiling, though less formal, is no less real. Women find our choices circumscribed not only in the large issues of life but also in the choices we make on a daily basis. The harassment a woman could face might make her take a longer route to avoid passing a construction site.