Coleman, P. K., & Nelson, E. S. (1999). Attitudes toward abortion and interest in the issue as determinants of perceptions of the appropriate level of male involvement in abortion decisions. Journal of American College Health, 47, 164-172.

Abortion decisions have a potentially meaningful effect on the lives of men. Previous research suggests that both men and women generally believe that men have the right to be involved in such decisions. However, very little research attention has been devoted to identifying individual difference correlates of discrepant levels of endorsement for male involvement in abortion decisions. The extent to which abortion attitudes (on a pro-choice to pro-life continuum), conceptualization of abortion as strictly a female issue, and interest in the issue operate as effective predictors of the appropriate level of male involvement in abortion decisions was examined in a sample of 1,387 college students. Results of a multiple regression analysis revealed that 44% of the variance in male involvement scores was explained by the predictor variables.

http://www.tandfonline.com/doi/abs/10.1080/07448489909595642