In October 1999, Harris et al1 published the results of a randomized, controlled, double-blind study, which indicated that patients who were admitted to the coronary care unit of a major hospital and prayed for by external intercessors on a daily basis for 28 days experienced significantly fewer clinical events during their hospital stay (either weighted for severity [P=.04] or unweighted [P=.04]) than patients who were admitted to the same unit and not prayed for. There was no significant difference between the 2 groups with respect to length of hospital stay or length of stay in the coronary care unit.
Smith JG, Fisher R. The Effect of Remote Intercessory Prayer on Clinical Outcomes. Arch Intern Med. 2000;160(12):1876. doi: