Figure 2.

Association between methylation index and selected clinical parameters. The mean methylation index values for various groups have been compared using the Student’s t-test to detect any association between methylation index and selected epidemiologic and clinical characteristics: (A) Eighty-five full panel cases. No differences have been noted with respect to clinical characteristics, (B) HPV-associated OPC, (C) HPV-negative OPC. Mean and standard deviation (SD) have been also indicated, and statistical comparisons between groups are depicted. * p < 0.05 indicates the statistical significance.