The laws of France make it notoriously difficult to gather data on the correlation between religion and fertility, but the best available studies show that in F

The laws of France make it notoriously difficult to gather data on the correlation between religion and fertility, but the best available studies show that in France "[t]he estimated fertility of a woman assisting [religious] offices every week is 24% higher that the expected fertility of a woman who never assist to offices." http://ideas.repec.org/p/mse/cesdoc/v08089.html http://ideas.repec.org/p/mse/cesdoc/v08089.html