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Table 4 Hazard Ratios by HPV-16 E6/E7 baseline status and change in OD ratio at last follow-up

From: Human papillomavirus serologic follow-up response and relationship to survival in head and neck cancer: a case-comparison study

Outcome/Antibody Status

HPV-16 E6

HPV-16 E7

HPV-16 E6 and/or E7

 

n (%)

HR (95% CI)1

p-value2

n (%)

HR (95% CI)1

p-value2

n (%)

HR (95% CI)1

p-value2

Overall Deaths

  

0.01

  

0.04

  

0.01

   Negative

353 (40.2)

4.6 (1.4-15.3)

 

344 (38.2)

3.0 (1.03-8.5)

 

344 (41.0)

3.8 (1.3-11.0)

 

   Positive

3 (13.6)

1.0

 

4 (20.0)

1.0

 

4 (15.8)

1.0

 

No OD decrease

0

  

0

  

0

  

OD Decrease

35

  

45

  

45

  

Disease Specific Deaths

  

0.017

  

0.07

  

0.04

   Negative

196 (24.4)

NE3

 

188 (22.5)

6.4 (0.8-48.7)

 

188 (24.3)

8.4 (1.1-63.3)

 

   Positive

0 (0.0)

1.0

 

1 (5.6)

1.0

 

1 (4.2)

1.0

 

No OD decrease

0

  

0

  

0

  

OD Decrease

0

  

15

  

15

  

Recurrence

  

0.35

  

0.36

  

0.90

   Negative

178 (21.5)

2.1 (0.4-9.7)

 

174 (21.0)

2.0 (0.4-9.4)

 

159 (20.0)

1.1 (0.3-3.5)

 

   Positive

2 (9.1)

1.0

 

2 (10.0)

1.0

 

4 (15.4)

1.0

 

No OD decrease

15

  

0

  

25

  

OD Decrease

1

  

210

  

210

  
  1. 1Adjusted for continuous age and stage; 2Adjusted p-value from Cox Regression models; 3Tumor status: 3 HPV-16, 1 HPV-33, 27 HPV-; 4Tumor status: 2 HPV-16, 1 HPV-33, 27 HPV-; 5Tumor status: all HPV-16; 6Tumor status: 2 HPV-16, 18 HPV-; 7Not estimable, Kaplan-Meier log-rank p = 0.01; 8Tumor status: 1 HPV-16, 1 HPV-33, 14 HPV-; 9Tumor status: 1 HPV-33, 13 HPV-; 10Tumor status: 1 HPV-16, 1 HPV-.