Table 4 Association of tumour characteristics with HPV seropositivity in OPC-patients of a Sri Lankan study population

Tumour site (N = 78)

Oral cavity

20

13

0.633

0.426

Pharynx

22

23

Tumour grade (N = 55)

Poor/undifferentiated

1

1

Well/moderate

26

27

0.00

1.00

Tumour size (N = 61)

T0-T2

12

17

T3-T4

16

16

0.174

0.676

Nodal involvement (N = 61)

Yes

24

25

No

4

8

0.425

0.515

Stage (N = 60)

I/II

2

4

III/IV

25

29

0.03

0.863