Subgroup analysis for different biospecimen long-chain n-3 PUFA compositions between subjects with and without CRC.

Abbreviations: CRC, colorectal cancer; N: number of included case-control studies; PC: prospective cohort study; CC: case-control study; SMD: standard mean difference compared with colorectal cancer subjects.aN, number of included studies.bP value for heterogeneity within each subgroup.cP value for heterogeneity between subgroups with meta-regression analysis.Subgroup analysis for different biospecimen long-chain n-3 PUFA compositions between subjects with and without CRC.