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History of the concept of ‘levels of evidence’ and their current status in relation to primary prevention through lifestyle interventions

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References

2000Randomized, Controlled Trials, Observational Studies, and the Hierarchy of Research Designs3,561 cited
2005The Cochrane Library2,035 cited
1999Assessing “Best Evidence”: Issues in Grading the Quality of Studies for Systematic Reviews134 cited
2002Systematic reviews in epidemiology: why are we so far behind?118 cited

Cited by

2010Cost-Effectiveness of Interventions to Promote Fruit and Vegetable Consumption74 cited
2003Defining the State of Knowledge with Respect to Food, Nutrition, Physical Activity, and the Prevention of Cancer20 cited
2010Inconsistent results in meta-analyses for the prevention of falls are found between study-level data and patient-level data16 cited

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