Table 3.

Univariate and multivariate analysis of categorical and continuous LNR with SEER cause-specific survival (CSS) of SEER salivary gland cancer pN+patients

LNR classification	Number	5-year	Log-rank	Multivariate analysisa
		CSS(%)	χ2 (P value)	HR (95% CI)	C-index	AIC
Cutpoints 0.17/0.55			32.149		0.695	5626.36
R1: 0–0.17	430	57.2	(< 0.001)	Reference
R2: 0.17–0.55	380	52.9		1.284 (0.993–1.663)
R3: > 0.55	400	39.9		1.986 (1.560–2.528)
Cutpoints 0.17/0.56			33.062		0.696	5625.15
R1: 0–0.17	430	57.2	(< 0.001)	Reference
R2: 0.17–0.56	384	53.1		1.276 (0.986–1.650)
R3: > 0.56	396	39.7		2.008 (1.578–2.557)
Continuous LNR				2.208 (1.671–2.918)	0.692	5627.78

^aThe multivariate analysis was adjusted using the same Cox regression model at Table 2