Table 1 |
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Criteria for assigning a level of evidence to recommendations |
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Level of Evidence |
Criteria |
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Level 1 |
Randomized control trials without important limitations |
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Level 2 |
Randomized control trials with important limitations |
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Observational studies (non-randomized clinical trials or cohort studies) with overwhelming evidence |
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Level 3 |
Other observational studies (prospective cohort studies, case-control studies, case series) |
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Level 4 |
Inadequate or no data in population of interest |
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Anecdotal evidence or clinical experience |
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Kesäniemi et al. International Journal of Behavioral Nutrition and Physical Activity 2010 7:41 doi:10.1186/1479-5868-7-41 |
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