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. 2024 Nov 15;7(2):43715. doi: 10.33137/cpoj.v7i2.43715

Table C.5.

Levels of Evidence – Meaningfulness
Level 1 Qualitative or mixed-methods systematic review
Level 2 Qualitative or mixed-methods synthesis
Level 3 Single qualitative study
Level 4 Systematic review of expert opinion
Level 5 Expert opinion