Patterns and Prognostic Value of Lymph Node Metastasis on Distant Metastasis and Survival in Nasopharyngeal Carcinoma: A Surveillance, Epidemiology, and End Results Study, 2006–2015

Table 3

Analysis of risk LN metastasis categories for distant metastasis using logistic regression in 1884 eligible NPC patients with LN metastasis.

LN metastasis category	Univariate analysis		Multivariate analysis
	OR (95% CI)		OR (95% CI)
Level 2	Reference		Reference
Levels 23	1.664 (0.926, 2.990)	0.089	1.714 (0.948, 3.100)	0.075
Level 1	2.065 (1.079, 3.950)	0.029	2.101 (1.090, 4.047)	0.027
Level 5	1.622 (0.802, 3.280)	0.178	1.506 (0.736, 3.084)	0.263
Levels 25	1.984 (1.019, 3.862)	0.044	1.949 (0.989, 3.843)	0.054
Levels 12	0.360 (0.085, 1.519)	0.164	0.356 (0.084, 1.513)	0.162
Levels 2345	4.295 (2.307, 7.999)	<0.001	4.064 (2.155, 7.666)	<0.001
Levels 235	0.994 (0.379, 2.608)	0.991	1.091 (0.413, 2.884)	0.861
Levels 2rp	1.458 (0.591, 3.596)	0.413	1.379 (0.552, 3.449)	0.492
Levels 234	1.215 (0.460, 3.209)	0.694	1.263 (0.476, 3.352)	0.639
Level rp	0.938 (0.278, 3.158)	0.917	0.960 (0.283, 3.254)	0.947
Level 3	1.382 (0.470, 4.065)	0.557	1.381 (0.464, 4.110)	0.562
Levels 23rp	1.930 (0.716, 5.206)	0.194	2.103 (0.772, 5.731)	0.146
Levels 24	2.853 (1.030, 7.906)	0.044	3.003 (1.074, 8.395)	0.036

CI, confidence interval; LN, lymph node; NPC, nasopharyngeal carcinoma; OR, odds ratio; rp, retropharynx. Level 2 means the patients with only level II LN metastasis. Levels 23 means the patients with level II and level III LN metastases, etc. Multivariate analysis adjusted for age, sex, and race.