Scot McKnight, over at Jesus Creed, posted these analyses of gender rates of Evangelicals over time. As always his posts prompt lots of good discussion, and one issue that came up was whether men are less likely now to attend church regularly than in previous decades. Here's a plot of the % of Evangelicals who are men, by year, by attendance. The top line is all evangelicals, the bottom line is those who attend church regularly (operationalized as weekly, several times a month or once a month).
As shown, men are less likely to attend church regularly, compared to women, but the gender ratio appears to be less imbalanced in recent years.