Role of Diet in Colorectal Cancer Incidence: Umbrella Review of Meta-analyses of Prospective Observational Studies.

4 , 5 , 6 In brief, associations that presented nominally significant random-effects summary effect sizes (ie, P ≤ .05) were graded as convincing (class I), highly suggestive (class II), suggestive (class III), or weak (class IV) evidence ( Table 1 ).

also in 7,732 other papers