In the study, the researchers monitored 1,802 patients at six hospitals who received coronary bypass surgery, in which doctors reroute circulation around a clogged vein or artery.
The patients were broken into three groups. Two were prayed for; the third was not. Half the patients who received the prayers were told that they were being prayed for; half were told that they might or might not receive prayers.
The researchers asked the members of three congregations — St. Paul's Monastery in St. Paul; the Community of Teresian Carmelites in Worcester, Mass.; and Silent Unity, a Missouri prayer ministry near Kansas City — to deliver the prayers, using the patients' first names and the first initials of their last names.
The congregations were told that they could pray in their own ways, but they were instructed to include the phrase, "for a successful surgery with a quick, healthy recovery and no complications."
Analyzing complications in the 30 days after the operations, the researchers found no differences between those patients who were prayed for and those who were not
