High | Confident that the true effect lies close to that of the estimate of the effect |
Moderate | Moderately confident in the effect estimate: the true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different |
Low | Confidence in the effect estimate is limited: the true effect may be substantially different from the estimate of the effect |
Very low | Little confidence in the effect estimate: the true effect is likely to be substantially different from the estimate of the effect |