Pretreatment predictors of adjuvant chemoradiation in patients receiving transoral robotic surgery for squamous cell carcinoma of the oropharynx: a case control study

Table 4 Sensitivity analysis comparing extracapsular extension (ECE) with preoperative node size (n = 21)

Preoperative Node Size	ECE	No ECE	P Value
Less than 2.0 cm	1 (20 %)	4 (80 %)	.01
Greater than or equal to 2.0 cm	14 (88 %)	2 (13 %)
Less than 2.5 cm	2 (29 %)	5 (71 %)	.006
Greater than or equal to 2.5 cm	13 (93 %)	1 (7 %)
Less than 3.0 cm	4 (44 %)	5 (56 %)	.046
Greater than or equal to 3.0 cm	11 (92 %)	1 (8 %)
Less than 3.5 cm	10 (63 %)	6 (38 %)	.26
Greater than or equal to 3.5 cm	5 (100 %)	0 (0 %)
Less than 4.0 cm	13 (68 %)	6 (32 %)	> .99
Greater than or equal to 4.0 cm	2 (100 %)	0 (0 %)

ISSN: 2059-7347