Why do a higher proportion of Christians go to jail than atheists?

Atheists, who make up somewhere between 3-14% of the population make up just 0.2% of the prison population. Christians, on the other hand, who make up 81% of the population make up 84% of the prison population. In fact, a Christian is at least 15 times more likely on average to end up in jail than an... show more Atheists, who make up somewhere between 3-14% of the population make up just 0.2% of the prison population.
Christians, on the other hand, who make up 81% of the population make up 84% of the prison population.
In fact, a Christian is at least 15 times more likely on average to end up in jail than an atheist.

What does this tell us about the usefulness of the Bible as a moral guide?

(Refs to follow as additional info).
Update: References:
Religious breakdown of US:
http://en.wikipedia.org/wiki/Religion_in_the_United_States
Prison study
http://www.holysmoke.org/icr-pri.htm
Update 2: @damiana: Sorry you thought the question was foolish. It's actually very serious. The Bible and Christianity are taught as ways of finding a good and virtuous life. Atheism on the other hand has no body of text or teaching to make that claim. Yet only 0.2% of the prison population is atheist - a startlingly low... show more @damiana: Sorry you thought the question was foolish. It's actually very serious. The Bible and Christianity are taught as ways of finding a good and virtuous life. Atheism on the other hand has no body of text or teaching to make that claim. Yet only 0.2% of the prison population is atheist - a startlingly low figure given their preponderance in society. So we should think very hard about whether atheism might be a BETTER moral guide than the Bible. If it is, that would be an important, non-trivial conclusion. So if you think about it for a moment you'll realize this is a very serious question indeed. Not one to brush off with an disparaging sniff.
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