'There is fair evidence of no benefit and good evidence of harm,' the team writes in the Canadian Medical Association Journal.
Thus the committee said it had found "fair evidence" that screening every 12 to 33 months "significantly reduces mortality from breast cancer".
When judges allow extra time to arrange for these evaluations, they exponentially increase the odds of reaching a fair, evidence-based decision.
Cipfa has called for an independent body to be set up to reform the allocation of local authority funding to ensure it is done in a "fair, evidence based and transparent way".
Among those are 14 studies that provide what the experts characterize as "fair" evidence that circumcision in adulthood protects men from H.I.V. transmission from a female partner, cutting infection rates by 40 to 60 percent.
"There is fair evidence that the farmers are confident that they are going to end up with a positive result," he said.
For services supported by overall good or fair evidence, the Task Force uses outcomes tables to help categorize the magnitude of benefits, harms, and net benefit from implementation of the preventive service into one of four categories: substantial, moderate, small, or zero/negative.
If one is on antidepressants, there is also fair evidence that a night of drinking will temporarily reduce their effectiveness, the experts I've spoken to agree.
For those with pain localized to the lower back due to disc degeneration, fair evidence supports spinal fusion as equal to intensive physical therapy and slightly better than low-intensity nonsurgical measures.
There is good but not ideal evidence that circumcision reduces the incidence of UTIs in boys under two years of age, and there is fair evidence that the reduction in incidence is by a factor of 310 times, but prevention of UTIs does not justify routine use of the procedure.
ψ Not recommended on the basis of fair evidence not to perform the manoeuvre.
