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Interaction analysis of metformin and relevant factors on colorectal cancer-specific mortality
| HR | 95%CI | P value | |
| Metformin-Sex | 0.369 | 0.155-0.881 | 0.025 |
| Metformin-BMI | 1.000 | 0.974-1.026 | 0.972 |
| Metformin-Site | 0.941 | 0.441-2.006 | 0.875 |
| Metformin-HbA1c | 0.999 | 0.926-1.078 | 0.979 |
BMI: Body mass index.
