U. S. Preventive Services Task Force (1989)
| Grade |
Recommendation |
Criterion |
| A |
Good evidence for inclusion |
There is good peer-review evidence supporting consideration of use for the intervention |
| B |
Fair evidence for inclusion |
There is fair peer-review evidence supporting consideration of use for the intervention |
| C |
Insufficient evidence |
There is insufficient peer-review evidence for inclusion supporting consideration of use for the intervention, although recommendations for use are possible on other grounds |
| D |
Fair evidence for exclusion |
There is fair peer-review evidence supporting that the intervention should be excluded from consideration of use |
| E |
Good evidence for exclusion |
There is good peer-review evidence supporting that the intervention should be excluded from consideration |
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