From the article;
"An analysis of the results found that there were no significant differences in the recovery and health of the patients who were prayed for and those who were not."
It sounds like there may have been a little problem with the controls. I propose calling a day of prayer-fast world-wide. Contact some really good intercessioners, some with previous success, for instance, and have them put their all into it. Additionally, a number of people can pray near the rooms of the sick to keep the evil forces away. A sort of Praraday shield. There has to be a way to get a real handle on this thing.
God will not be mocked, however. I don't know if He'll agree to participate in such a study.
I recall reading something long ago about such studies, and I came away from the article realizing how difficult it is to control for all the potential variables. It's like the studies we often see showing longer lifespans for married men. What does that prove about marriage itself? Many of the perpetually sick, the winos, the derranged, career criminals, the alternate lifestyle types, and other such marital undesirables would be "naturally" excluded from the population of married men, thus skewing the results.
Similarly, among the people prayed for and who recovered, were some of them "naturally" in better shape, merely because they were already healthy enough to be regularly attending church, had a large support group, etc.? It might be that a group of gregarious people and a group of sullen loners would exhibit wildly different health statistics, prayers or no prayers. In other words, it's difficult in such studies to avoid playing with a stacked deck.