The study featured a much larger group of subjects (150 rather than 40), and concluded that the only difference between groups that received healing prayer and those that did not was that the group receiving prayer were more likely to guess they were the experimental subjects rather than the control group.
The study involved a larger sample size (150 participants compared to 40), and found that the only difference between groups receiving healing prayer and those not receiving it was that the group receiving prayer were more likely to believe they were the experimental subjects rather than the control group.