Multivariate Cox regression analysis of overall survival in the study population
| Characteristic | HR (95% CI) | p |
|---|---|---|
| ICI type | ||
| Anti-PD-1/PD-L1 | Reference | |
| Anti-CTLA-4 | 0.85 (0.56–1.28) | 0.434 |
| Combination | 0.78 (0.58–1.05) | 0.097 |
| Stage IV cancer | 1.63 (1.03–2.60) | 0.038 |
| IMDC | 0.45 (0.34–0.61) | < 0.001 |
| Anaerobic antibiotic therapy | 1.44 (1.11–1.87) | 0.007 |
Abbreviations: HR Hazard ratio, CI Confidence interval