Table 6.

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