Skip to main content

Table 1 Barriers related to the grade strength of the evidence

From: The European Society of Human Reproduction and Embryology guideline for the diagnosis and treatment of endometriosis: an electronic guideline implementability appraisal

Grading Items Barriers Proportion of barriers to items
(in percentage)
Total
(in percentage)
A 260 26 10.0 26/260
(10.0)
B
C
D
GPP
19
51
19
226
3
5
4
40
15.8
9.8
21.1
17.7
52/315
(16.5)
  1. Strength of evidence
  2. Grade A: Directly based on level 1 evidence
  3. Grade B: Directly based on level 2 evidence or extrapolated recommendation from level 1 evidence
  4. Grade C: Directly based on level 3 evidence or extrapolated recommendation from either level 1 or level 2 evidence
  5. Grade D: Directly based on level 4 evidence or extrapolated recommendation from either level 1, 2, or 3 evidence
  6. Grade GPP: Good practice point based upon the views of the Guideline Development Group
  7. Hierarchy of evidence
  8. Level Evidence
  9. 1a Systematic review and meta-analysis of randomised controlled trials
  10. 1b At least one randomised controlled trial
  11. 2a At least one well-designed controlled study without randomisation
  12. 2b At least one other type of well-designed quasi-experimental study
  13. 3 Well-designed, nonexperimental, descriptive studies, such as comparative studies, correlation studies, or case studies
  14. 4 Expert committee reports or opinions and/or clinical experience of respected authorities