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W., Jo, E., Kim, R
Lancet Haematol 5(12):e628-e640, 2018
The Evidence Pyramid Scientific evidence follows a hierarchy of reliability: Systematic reviews and meta-analyses (highest quality) Combine multiple studies for robust conclusions Randomized controlled trials (RCTs) Gold standard for individual studies Cohort and observational studies Real-world data but with confounding variables Animal studies (preclinical) Useful for mechanism exploration but not directly applicable to humans In vitro (cell culture) studies (lowest) Laboratory findings that may not translate to living organisms Current State of Collagen Research The collagen peptide evidence base has significant limitations : Short study duration : Most RCTs last 8-12 weeks
In addition to searching in databases, we checked the references of related articles for any missing eligible articles (hand-search method)
Huang et al., 2021)
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