Keefe et al (2001) summarize their data as follows:

“Thirty-five patients with rheumatoid arthritis kept a diary for 30 days. The participants reported having spiritual experiences, such as a desire to be in union with God, on a frequent basis. On days that participants rated their ability to control pain using religious coping methods as high, they were much less likely to have joint pain.”

Does the study show that religious coping methods are effective at controlling joint pain? If not, how would you explain the data?