hierarchies: grades

Question 1

a preponderance of level 1 and level 2 studies support the recommendation. Must include at least 1 level 1 study

Answer 1

A

strong evidence

Question 2

a single high quality RCT or a preponderance of level II studies support the recommendation

Answer 2

B
moderate evidence

Question 3

a single level II study or a preponderance of level III and IV studies including statements of consensus by content experts support the recommendation

Answer 3

C
weak evidence

Question 4

higher quality studies conducted on this topic disagree

Answer 4

D conflicting evidence

Question 5

a preponderance of evidence from animal or cadaver studies from conceptual models/principles or from basic sciences/bench research support this conclusion

Answer 5

E
theoretical/foundational evidence

Question 6

best practice based on the clinical experience alone

Answer 6

F
expert opinion

Question 7

weak evidence

Answer 7

C

Question 8

conflicting evidence

Answer 8

D

Question 9

theoretical/foundational evidence

Answer 9

E

Question 10

expert opinion

Answer 10

F

Question 11

moderate evidence

Answer 11

B

Question 12

strong evidence

Answer 12

A