. Author manuscript; available in PMC: 2009 Oct 28.

Published in final edited form as: Int J Radiat Oncol Biol Phys. 2009 Jun 1;74(2):553–561. doi: 10.1016/j.ijrobp.2009.02.015

Table 3.

Pattern of failure by HPV signal intensity

	HPV Status		p value	χ²

	Strong (n = 36)	Negative-weak (n = 46)
% 5-year local control	94.4 ± 3.9	66.4 ± 7.5	0.004	8.3
% 5-year regional control	88.7 ± 5.3	67.1 ± 7.0	0.012	6.3
% 5-year freedom from distant metastasis	94.4 ± 3.8	73.6 ± 7.8	0.032	4.6

Abbreviation: HPV = human papillomavirus.