There have been a few posts on the Art of Manliness blog that address “the historical and cultural factors that have made women statistically more likely to be committed to the religion than men.”
Of particular interest is the last article, where the authors start digging for the roots of the problem. I have tended to attribute this tendency to developments within the Victorian period, if one can legitimately call Victorian parlor behavior a ‘development,’ but the authors find roots much deeper than the 19th century. But whatever has happened, the authors suggest, this represents a distortion of the true essence of Christianity. The entire series is worth reading, however.
Caveat Lector: the articles are not meant to be scholarly. I would really like to see more research done on this topic, such as this book begins to do. But these articles do raise an important topic for conservatives to consider.