Table 1 Criteria for assigning level of evidence to a recommendation
From: Systematic review of sedentary behaviour and health indicators in school-aged children and youth
Level of evidence | Criteria |
|---|---|
Level 1 | - Randomized control trials without important limitations |
Level 2 | - Randomized control trials with important limitations - Observational studies (non-randomized clinical trials or cohort studies) with overwhelming evidence |
Level 3 | - Other observational studies (prospective cohort studies, case-control studies, case series) |
Level 4 | - Inadequate or no data in population of interest - Anecdotal evidence or clinical experience |