Outcome and Prognostic Factors in T4a Oropharyngeal Carcinoma, Including the Role of HPV Infection

Table 2

Oncologic results according to cN category.

N category	Number of patients	5-Y-KM-Estimate (%) (Total number of events) (95% CI)
		OS	DSS	LC	RC	DC
N0	115	40.3 (85) (31–50)	57.1 (43) (47–67)	83.5 (18) (76–91)	*91.5 (6) (84–99)	*85.7 (9) (77–95)
N1	35	17.1 (31) (5–30)	31.7 (22) (14–49)	*80.0 (7) (67–93)	*75.9 (3) (50–1)	No events*
N2	222	13.6 (191) (9–19)	27.7 (132) (20–35)	79.6 (31) (71–88)	*91.9 (8) (86–97)	79.3 (15) (68–91)
N3	46	15.8 (40) (5–27)	20.5 (32) (8–33)	*80.8 (7) (67–94)	*80.7 (5) (63–99)	*76.0 (3) (51–100)
N𝑥	8	*25.0 (7) (0–55)	*33.3 (5) (0–71)	*72.9 (2) (41–1)	No events*	No events*