Will future prayer studies pass review by Institutional Review Boards? IRB's have to approve human experiments. A novel treatment, like prayer therapy, can be approved if the likelihood of harm is considered miniscule. That is no longer true. A 40% increase in bad complications, even if it is within the range of statistical error, means the IRB must consider prayer as a possible toxic treatment. Given the limited results for a positive effect, and the suspicion of significant harm, ethical considerations will likely prevent any further experiments with prayer in medical settings.
Personally I find a toxic effect of prayer to be at least as interesting as a beneficial effect, though as I noted previously I await the P values with great interest. Even if the P values are not significant, however, the IRB issue will remain.