Table 2. Detection of human papillomavirus and overexpression of p16 in the study group and control group.

	Study group	Control group	p-value
No. of patients	35	12
HPV+	6 (17.1%)	1 (8.3%)	0.659
P16+	16 (45.7%)	1 (8.3%)	0.034
HPV+/P16+	3 (8.6%)	0 (0.0%)	0.295

HPV: human papillomavirus virus.

HPV+: detection of HPV.

P16+: overexpression of p16.