If prayer really worked, wouldn't more people recover from cancer?
Does someone here believe that prayers can have a material impact on the real world? If you do, I'd be very interested in hearing your views on this analysis: http://i.imgur.com/dbu3s8x.jpg
The first map shows the proportion of the population in each State that prays at least once a day, based on a survey carried out in 2008. The second map shows the annual number of deaths from cancer per 100,000 people in each Health Service Area across the US in the period 2006-2010.
When someone is diagnosed with cancer it is clearly a very worrying event, and I expect the affected person and their family and friends would pray more often than normal. I also expect that those who normally pray a lot will still be praying more than those in the same situation who normally pray only rarely or not at all. I'm also assuming that most of the people who pray for a cancer patient live near, or at least in the same state as, the patient.
On this basis, the people who live in places where they pray more would be less likely to die of cancer if prayer worked. Looking at the maps you can clearly see that the opposite is true: some of the places where people pray the most have the worst cancer death rates and the places where people pray the least have some of the lowest death rates.
From a rational, scientific point of view I can think of a number of contributing factors, such as differences is healthcare provision, different demographics and less healthy life choices (food, smoking, lack of exercise, etc). It could even be that more religious people refuse medical treatment due to the perceived power of prayer.
Given this information, can someone here who believes in the power of prayer please explain the apparent discrepancy between the data and what we would expect to see if prayer worked?