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. Author manuscript; available in PMC: 2016 Jul 1.
Published in final edited form as: Oral Oncol. 2015 May 6;51(7):662–667. doi: 10.1016/j.oraloncology.2015.04.011

Table 3.

Association of pre-treatment antibody status with tumor HPV and smoking status among cases

HPV-
(Reference)
N=26
HPV+
N=111
p Adjusted ORc
(95% CI)
HPV+ >10
pack yearsd
N=47
Pe Adjusted ORef
(95% CI)
HPV+ ≤10
pack yearsd
N=63
Pe Adjusted ORef
(95% CI)



No. + (%) No. + (%) No. + (%) No. + (%)



E1 13 (50.0) 66 (59.5) 0.380 1.1 (0.4–2.9) 21 (44.7) 0.663 0.7 (0.2–1.9) 44 (69.8) 0.076 1.5 (0.5–4.2)
NE2 8 (30.8) 50 (45.1) 0.185 1.5 (0.6–4.0) 19 (40.4) 0.413 1.6 (0.5–4.8) 31 (49.2) 0.111 1.5 (0.5–4.3)
CE2 11 (42.3) 68 (61.3) 0.078 1.9 (0.7–5.0) 20 (42.6) 0.984 1.0 (0.3–2.8) 47 (74.6) 0.004 2.9 (1.0–8.1)
NE2 and/or CE2a 11 (42.3) 72 (64.9) 0.034 2.3 (0.9–6.0) 22 (46.8) 0.711 1.2 (0.4–3.5) 49 (77.8) 0.001 3.4 (1.2–9.6)
E4 6 (23.1) 27 (24.3) 0.893 0.9 (0.3–2.6) 10 (21.3) 0.859 0.8 (0.2–2.6) 16 (25.4) 0.818 0.7 (0.2–2.4)
E5 2 (7.7) 4 (3.6) 0.319b 0.3 (0–1.9) 3 (6.4) 1.0b 0.6 (0.1–4.3) 1 (1.6) 0.203b 0.2 (0–2.4)
E6 10 (38.5) 66 (59.5) 0.052 2.1 (0.8–5.3) 24 (51.1) 0.301 1.6 (0.6–4.6) 42 (66.7) 0.014 2.5 (0.9–7.0)
E7 11 (42.3) 68 (61.3) 0.078 1.8 (0.7–4.7) 20 (42.6) 0.984 0.9 (0.3–2.6) 47 (74.6) 0.004 2.9 (1.0–8.1)
E6 and/or E7a 12 (46.2) 88 (79.3) 0.001 4.4 (1.6–12.4) 30 (63.8) 0.143 2.0 (0.7–5.7) 57 (90.5) <0.001 8.4 (2.5–27.8)
NE2, CE2, E6, and/or E7a 13 (50.0) 94 (84.7) <0.001 6.5 (2.1–20.1) 33 (70.2) 0.087 2.5 (0.8–7.5) 60 (95.2) <0.001 17.5 (4.0–77.2)
Any Ea 16 (61.5) 94 (84.7) 0.008 3.4 (1.0–11.4)) 33 (70.2) 0.450 1.4 (0.4–4.4) 60 (95.2) <0.001 8.0 (1.8–35.7)
L1 3 (11.5) 6 (5.4) 0.371b 0.4 (0.1–1.8) 3 (6.4) 0.659b 0.5 (0.1–2.7) 3 (4.8) 0.352b 0.3 (0.1–2.0)
L2 0 0 NC NC 0 NC NC 0 NC NC
Any La 3 (11.5) 6 (5.4) 0.371b 0.4 (0.1–1.8) 3 (6.4) 0.659b 0.5 (0.1–2.7) 3 (4.8) 0.352b 0.3 (0.1–2.0)
Any E and/or La 16 (61.5) 94 (84.7) 0.008 3.4 (1.0–11.5) 33 (70.2) 0.450 1.4 (0.4–4.4) 60 (95.2) <0.001 8.0 (1.8–35.7)
a

Any positive vs. all negative

b

Fisher’s exact test

c

Adjusted for age, smoking (≤10 pack years vs. >10 pack years), N category (N0-N2a vs. N2b-N3), and subsite (tonsil/base of tongue vs. other)

d

One HPV+ case is missing pack years

e

Referent group is HPV- cases

f

Adjusted for age, N category (N0-N2a vs. N2b-N3), and subsite (tonsil/base of tongue vs. other)

NC, not calculable due to zero cells