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. 2018 Nov 29;13:38. doi: 10.1186/s13027-018-0210-9

Table 1.

Characteristics of HPV negative versus HPV positive patients

Variable		HPV negative	HPV positive
Variable		(n = 60) no. (%)	(n = 14) no. (%)
Age at diagnosis	≤ 60	29 (48.3%)	4 (28.6%)
Age at diagnosis	> 60	31 (51.7%)	10 (71.4%)
Gender	Female	10 (16.7%)	6 (42.9%)
Gender	Male	50 (83.3%)	8 (57.1%)
Tumor location	Upper third	8 (13.3%)	4 (28.6%)
	Middle third	35 (58.3%)	6 (42.8%)
	Lower third	17 (28.4%)	4 (28.6%)
Clinical T stage	cT3	26 (43.3%)	8 (57.1%)
Clinical T stage	cT4	34 (56.7%)	6 (42.9%)
Clinical N stage	cN0	6 (10.0%)	4 (28.6%)
Clinical N stage	cN1–2	54 (90.0%)	10 (71.4%)
Clinical M stage	cM0	49 (81.7%)	14 (100.0%)
Clinical M stage	cM1	11 (18.3%)	0 (0.0%)