Table 3. p16 status in relation to patient age, N status and 2- and 5-year survival, respectively.

p16 QS	Patients aged ⩽40 years	Patients aged 41–65 years	Patients aged >65 years	N0	N+	2-year survival	5-year survival
0	12 (75%)	25 (66%)	36 (66%)	58 (72%)	15 (52%)	44 (75%)	28 (76%)	73 (67%)
1–5	2 (12.5%)	9 (24%)	10 (18%)	15 (19%)	6 (21%)	9 (15%)	5 (13%)	21 (19%)
6–18	2 (12.5%)	4 (10%)	9 (16%)	7 (9%)	8 (27%)	6 (10%)	4 (11%)	15 (14%)
Total	16	38	55	80	29	59/105	37/89	109

Abbreviation: N=nodal metastasis; QS=quick score. Concerning 2-year survival, 4 patients had not been followed that long, and in the analysis of 5-year survival, 20 patients had too short follow-up.