>Does "willingness to father" matter in your model? Or are women special?
No. It would be difficult to draw the study group of "experiencing unplanned and or unexpected pregnancy with the freely available option to choose not to mother" from a group of fathers.
"Willingness to mother" simply attempts to shift the emphasis from the act of termination to the motivation for termination, and focus all of the energy of both sides of the issue toward changing the social factors that determine the index.
Martin