Please make your selections and press the calculate button
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Class I
Conditions for which there is evidence and/or general agreement that a given diagnostic evaluation, procedure, or treatment is beneficial, useful, and effective
Class II
Conditions for which there is conflicting evidence and/or a divergence of opinion about the usefulness and efficacy of a diagnostic evaluation, procedure, or treatment
Class IIa
Weight of evidence and/or opinion is in favor of usefulness and efficacy
Class IIb
Usefulness and efficacy are less well established by evidence and/or opinion
Class III
Conditions for which there is evidence and/or general agreement that a diagnostic evaluation, procedure, or treatment is not useful and effective or if it in some cases may be harmful
Evidence Quality
Level A
Data derived from multiple randomized clinical trials or meta-analyses
Level B
Data derived from a single randomized trial, or nonrandomized studies
Level C
Consensus opinion of experts, case studies, or standard of care
Evidence Quality
A - High
Further research is very unlikely to change our confidence in the estimate of effect
B - Moderate
Further research is likely to have an important impact on our confidence in the estimate of effect and may
change the estimate
C - Low
Further research is very likely to have an important impact on our confidence in the estimate of effect and
is likely to change the estimate. Any change of estimate is uncertain
Recommendation
1 - Strong
Factors influencing the strength of the recommendation included the quality of the evidence, presumed
patient-important outcomes, and cost
2 - Weak
Variability in preferences and values, or more uncertainty. Recommendation is made with less certainty,
higher cost or resource consumption