Hey, Women! Comics!'s Women and Comics survey is an annual(ish) event asking women from all across the internet to provide a picture of themselves and their relationship with comics, either as a current reader or non-reader of comics.
The surveys are constantly evolving, getting (hopefully!) more streamlined and informative every year.
Women and Comics Survey 2011: Results Part 2! (Comics non-readers)
Women and Comics Survey 2011: Results Part 1! (Comics readers)
2011 wrap-up: What We Can Learn
Reasons for Comics Non-Readership Among Women Survey - The Results