FlyCMH, I suggest you look up the Pew Research Center for the People & the Press and see how they do their polls, that's all I can say. It was a newspaper article, not a scientific paper, so it didn't say how the poll was conducted. And no, it's not the complete article, I copied from the Huntsville Times and you can't put the whole article on this webpage anyway due to copyright restrictions by a.net and Knight Ridder.
777YYC, the article included all religious services, not just Christian churches.
Zak, the most heinous mass murders committed in history have been done by atheists and you know it. 65 million murdered in China. 20 million (at least) murdered, shot, or starved to death in the USSR
. 6 million gassed and otherwise killed in Germany. Mao, Lenin/Stalin, and Hitler were all atheists.
Besides, that's not on-topic anyway.