Table 11 Grading of levels of Evidence [120]
From: ERNICA guidelines for the management of rectosigmoid Hirschsprung’s disease
Level of Evidence | |
• I Evidence from at least one randomized controlled trial | |
• II1 Evidence from well-designed case-control or cohort studies, preferably from more than one research group or centre | |
• II2 Comparisons between times and places with or without the intervention, or dramatic results of uncontrolled experiments | |
• III Opinions of respected authorities, based on clinical experience, descriptive studies or reports of expert committees. |