This may be a narrative that found agreeable statistics as there is no mention of abortion. It seems self evident that abortions reduce the number of children born into low income, high risk environments and those with birth defects. These are all leading reasons for infant mortality and reasons that women choose to have an abortion in the first place.
From the abstract,"churches and church membership data." unless they went tabulating from church to church, this throws the results nearly out. Church membership isn't something that is updated particularly frequently, at least in my experience.
