I have some games on my iPhone. There are a couple that I've spent a few dozen hours working my way through a few times, then put away. (e.g. "No, Human") There are a few I've played with a little, out of curiosity, but lost interest in. (e.g. "Super Monkey Ball") There are a couple more that I play once in a while when I'm bored and don't want to think. (e.g. "Trism")
Which doesn't make me a "gamer". The only console I've ever owned was an Atari, the last game I played on a screen larger than 3.5 inches was "Riven", and quite frankly I'd rather listen to someone talk about football (which bores me to tears, but at least I know how it works) than hear about whatever games they're playing. I'm sure I could find a common interest or two with many (maybe even most) gamers – perhaps political views, movies or comics or TV shows, hobbies or activities, etc – but they have nothing to do with the fact that I also have some games on my iPhone.
So if your definition of "gamer" is broad enough to include both me and "Call of Warcraft" players, you might as well just say "people" instead. (And pointing out that adult women outnumber teenage boys is not exactly an insightful or useful factoid.)