[LMB] reader stats

[Lois McMaster Bujold]

In the never-ending department of How do people read, anyway?, another 
query...

We've heard, with the reliability of any other internet statistic, that 
about 20% of the readers in the romance genre are men.  Has anyone done 
a comparable survey ("the plural of anecdote is not data") to find out 
what percentage of the men's adventure fiction genre readers are women?

Curious, L.